Hotspot detection and screen buffer

.gitea/workflows/release.yaml

@@ -20,21 +20,21 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set up Java JDK (Temurin 17)
+      - name: Set up Java JDK (Temurin 11)
         uses: actions/setup-java@v3
         continue-on-error: true
         with:
-          java-version: '17'
+          java-version: '11'
           distribution: 'temurin'
 
       - name: Ensure Java Available
         run: |
           if ! command -v javac >/dev/null 2>&1; then
-            echo "Installing OpenJDK 17 via package manager..."
+            echo "Installing OpenJDK 11 via package manager..."
             if command -v apt-get >/dev/null 2>&1; then
-              apt-get update && apt-get install -y openjdk-17-jdk-headless || true
+              apt-get update && apt-get install -y openjdk-11-jdk-headless || true
             elif command -v apk >/dev/null 2>&1; then
-              apk add --no-cache openjdk17 || true
+              apk add --no-cache openjdk11 || true
             fi
           fi
           echo "Java compiler:"

artwork/j3270_icon.svg

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+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="124 738 320 320"
+   width="320"
+   height="320"
+   xml:space="preserve"
+   id="svg_j3270_icon"
+   version="1.1">
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artwork/lib3270j.svg

@@ -0,0 +1,146 @@
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+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
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+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <path
+           id="path50"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <!-- '2' -->
+        <path
+           id="path52"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <path
+           id="path54"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <!-- '7' -->
+        <path
+           id="path56"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <path
+           id="path58"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <!-- '0' -->
+        <path
+           id="path60"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
+        <path
+           id="path62"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
+        <!-- 'j' -->
+        <path
+           id="path64"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <path
+           id="path66"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <!-- Smile -->
+        <path
+           id="path68"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2778.85,1478.34 0.04,-0.02 c 21.03,-31.91 56.69,-51.12 94.91,-51.12 0.41,0 0.83,0 1.24,0.01 l -0.02,0.07 c 43.88,0.19 84.11,24.51 104.66,63.28" />
+        <!-- Left Eye (cyan) -->
+        <path
+           id="path70"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2820.22,1595.17 0.01,0.01 c -14.62,-1.91 -25.56,-14.37 -25.56,-29.11 0,-0.03 0,-0.07 0,-0.1 l -0.02,-0.01 c 0,-0.03 0,-0.07 0,-0.1 0,-16.09 13.04,-29.14 29.13,-29.14 0.43,0 0.87,0.01 1.29,0.03 h 3.67 0.01 c 14.61,1.91 25.55,14.37 25.55,29.11 0,0.03 0,0.07 0,0.1 l 0.02,0.01 c 0,0.04 0,0.08 0,0.12 0,16.07 -13.03,29.09 -29.09,29.09 -0.03,0 -0.08,0 -0.12,0 l -4.89,-0.01" />
+        <!-- Right Eye (cyan) -->
+        <path
+           id="path72"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2921.23,1569.61 v -3.65 l -0.01,-0.01 c 0,-0.27 -0.01,-0.54 -0.01,-0.81 0,-18.22 14.66,-33.05 32.87,-33.26 l 0.03,0.01 c 0.28,0 0.57,-0.01 0.84,-0.01 17.29,0 31.72,13.22 33.24,30.44 l -0.02,3.64 0.02,0.02 c 0,0.27 0.01,0.54 0.01,0.81 0,18.37 -14.9,33.28 -33.28,33.28 -0.26,0 -0.54,-0.01 -0.81,-0.02 l -0.02,-0.03 c -17.14,-0.18 -31.36,-13.34 -32.86,-30.42" />
+        <!-- Nose -->
+        <path
+           id="path74"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2892.03,1528.23 -29.21,-20.68" />
+        <path
+           id="path76"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2862.82,1507.55 h 32.86" />
+      </g>
+    </g>
+  </g>
+</svg>

j3270.ini.sample

@@ -3,6 +3,11 @@
 ; or:        ./run.sh -c j3270.ini
 
 [appearance]
+; UI font settings (menus, dialogs, status bar)
+; uiFontFamily = SansSerif
+; uiFontSize = 13
+;
+; Terminal font settings (3270 screen display)
 ; fontFamily = IBM 3270
 ; fontSize = 18
 
@@ -10,6 +15,7 @@
 ; startupBehavior = AUTO_CONNECT | SHOW_CONNECT | DO_NOTHING
 ; autoConnectHost = mainframe.example.com
 ; autoConnectPort = 23
+; blockPaste = true
 
 [colors]
 ; Host colors 0-15 (hex RGB)

j3270/src/main/java/haus/nightmare/j3270/J3270App.java

@@ -42,8 +42,10 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
     // Dialog instances
     private FindDialog findDialog;
     private ScriptDialog scriptDialog;
+    private MacroDialog macroDialog;
     private FieldInspectorDialog fieldInspectorDialog;
     private PrinterSessionDialog printerSessionDialog;
+    private ScreenHistoryDialog screenHistoryDialog;
 
     // Modes menu items
     private JCheckBoxMenuItem docModeItem;
@@ -60,6 +62,7 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         super("j3270 — Java TN3270 Terminal Emulator");
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setBackground(Color.BLACK);
+        AppIcon.applyTo(this);
 
         buildUI();
         buildMenuBar();
@@ -93,6 +96,9 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
                 if (printerSessionDialog != null) {
                     printerSessionDialog.dispose();
                 }
+                if (screenHistoryDialog != null) {
+                    screenHistoryDialog.dispose();
+                }
                 terminalPanel.dispose();
             }
 
@@ -103,6 +109,29 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
                 }
             }
         });
+
+        // Ensure clicking anywhere inside the frame brings focus to window and terminalPanel
+        Toolkit.getDefaultToolkit().addAWTEventListener(event -> {
+            if (event instanceof MouseEvent && event.getID() == MouseEvent.MOUSE_PRESSED) {
+                MouseEvent me = (MouseEvent) event;
+                Object src = me.getSource();
+                if (src instanceof Component) {
+                    Window win = SwingUtilities.getWindowAncestor((Component) src);
+                    if (win == J3270App.this && !isAnyChildDialogActive()) {
+                        if (!J3270App.this.isFocused() || !J3270App.this.isActive()) {
+                            J3270App.this.toFront();
+                            J3270App.this.requestFocus();
+                        }
+                        boolean isMenu = (src instanceof JMenuBar) || (src instanceof JMenuItem) || (src instanceof JPopupMenu)
+                                || SwingUtilities.getAncestorOfClass(JMenuBar.class, (Component) src) != null
+                                || SwingUtilities.getAncestorOfClass(JPopupMenu.class, (Component) src) != null;
+                        if (!isMenu && terminalPanel != null && !terminalPanel.hasFocus()) {
+                            terminalPanel.requestFocusInWindow();
+                        }
+                    }
+                }
+            }
+        }, AWTEvent.MOUSE_EVENT_MASK);
     }
 
     private boolean isAnyChildDialogActive() {
@@ -112,8 +141,10 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         }
         if (findDialog != null && findDialog.isVisible()) return true;
         if (scriptDialog != null && scriptDialog.isVisible()) return true;
+        if (macroDialog != null && macroDialog.isVisible()) return true;
         if (fieldInspectorDialog != null && fieldInspectorDialog.isVisible()) return true;
         if (printerSessionDialog != null && printerSessionDialog.isVisible()) return true;
+        if (screenHistoryDialog != null && screenHistoryDialog.isVisible()) return true;
         for (Window owned : getOwnedWindows()) {
             if (owned != null && owned.isVisible()) {
                 return true;
@@ -180,6 +211,7 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
 
         // 2. Edit menu
         JMenu editMenu = createMenu("Edit");
+        editMenu.add(createMenuItem("Cut", KeyEvent.VK_X, () -> terminalPanel.cutSelection()));
         editMenu.add(createMenuItem("Copy", KeyEvent.VK_C, () -> terminalPanel.copySelection()));
         editMenu.add(createMenuItem("Paste", KeyEvent.VK_V, () -> terminalPanel.pasteClipboard()));
         editMenu.add(createMenuItem("Paste with Line Wrap...", -1, this::showPasteLineWrapDialog));
@@ -311,6 +343,7 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         viewMenu.add(gfxMenu);
 
         viewMenu.addSeparator();
+        viewMenu.add(createMenuItem("Screen History...", KeyEvent.VK_H, this::showScreenHistoryDialog, true));
         viewMenu.add(createMenuItem("Field Inspector...", -1, this::showFieldInspectorDialog));
         menuBar.add(viewMenu);
 
@@ -429,6 +462,8 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         }, true));
         actionsMenu.addSeparator();
         actionsMenu.add(createMenuItem("Run Keystrokes / Script...", -1, this::showScriptDialog));
+        actionsMenu.add(createMenuItem("Macro Runtime (<HASCRIPT>)...", KeyEvent.VK_M, this::showMacroDialog, true));
+        actionsMenu.add(createMenuItem("Screen History...", KeyEvent.VK_H, this::showScreenHistoryDialog, true));
         actionsMenu.add(createMenuItem("File Transfer...", KeyEvent.VK_T, this::showFileTransferDialog, true));
         menuBar.add(actionsMenu);
 
@@ -535,6 +570,13 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         scriptDialog.setVisible(true);
     }
 
+    private void showMacroDialog() {
+        if (macroDialog == null) {
+            macroDialog = new MacroDialog(this, client, terminalPanel);
+        }
+        macroDialog.setVisible(true);
+    }
+
     private void showFieldInspectorDialog() {
         if (client == null) {
             JOptionPane.showMessageDialog(this, "Connect to a host before inspecting fields.", "Not Connected", JOptionPane.WARNING_MESSAGE);
@@ -558,6 +600,18 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         printerSessionDialog.setVisible(true);
     }
 
+    private void showScreenHistoryDialog() {
+        if (screenHistoryDialog == null) {
+            screenHistoryDialog = new ScreenHistoryDialog(this, client);
+        } else {
+            if (client != null && client.getScreenHistoryBuffer() != null) {
+                screenHistoryDialog.refreshHistoryView(client.getScreenHistoryBuffer().size() - 1);
+            }
+        }
+        screenHistoryDialog.setVisible(true);
+        screenHistoryDialog.toFront();
+    }
+
     private void showPasteLineWrapDialog() {
         if (client == null || !client.getConnectionState().isFullSession()) {
             JOptionPane.showMessageDialog(this, "Connect to a 3270 session before pasting.", "Not Connected", JOptionPane.WARNING_MESSAGE);
@@ -693,6 +747,7 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         dialog.setInitialTls(haus.nightmare.j3270.config.Settings.getAutoConnectTls());
         dialog.setInitialVerifyCert(haus.nightmare.j3270.config.Settings.getAutoConnectVerifyCert());
         dialog.setInitialCodePage(haus.nightmare.j3270.config.Settings.getCodePage());
+        dialog.setInitialGraphicsMode(haus.nightmare.j3270.config.Settings.getGraphicsMode());
         dialog.setVisible(true);
 
         if (dialog.isConfirmed()) {
@@ -712,6 +767,14 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         return terminalPanel;
     }
 
+    public Telnet3270Client getClient() {
+        return client;
+    }
+
+    public StatusBar getStatusBar() {
+        return statusBar;
+    }
+
     void connect(ConnectionConfig config) {
         lastHost = config.getHost();
         lastPort = config.getPort();
@@ -721,6 +784,9 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         haus.nightmare.j3270.config.Settings.setAutoConnectTls(config.isUseTls());
         haus.nightmare.j3270.config.Settings.setAutoConnectVerifyCert(config.isTlsVerifyCert());
         haus.nightmare.j3270.config.Settings.setCodePage(config.getCodePage());
+        if (config.getGraphicsMode() != null) {
+            haus.nightmare.j3270.config.Settings.setGraphicsMode(config.getGraphicsMode());
+        }
 
         disconnect();
 
@@ -764,6 +830,9 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
                 fileTransfer.cancel();
                 fileTransfer = null;
             }
+            if (macroDialog != null) {
+                macroDialog.stopMacro();
+            }
             Telnet3270Client c = client;
             client = null;
             new Thread(() -> {
@@ -941,7 +1010,7 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
 
         JTextArea area = new JTextArea(text);
         area.setEditable(false);
-        area.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
+        area.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleTextArea(area);
         JScrollPane sp = new JScrollPane(area);
         ThemeManager.styleScrollPane(sp);
@@ -974,7 +1043,7 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
 
         JTextArea area = new JTextArea(text);
         area.setEditable(false);
-        area.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
+        area.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleTextArea(area);
         JScrollPane sp = new JScrollPane(area);
         ThemeManager.styleScrollPane(sp);
@@ -998,55 +1067,23 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
                 "About j3270", JOptionPane.INFORMATION_MESSAGE);
     }
 
-    // ========== Main ==========
+    /**
-
+     * Configure application logging. When debug is false, disables all logging
-    public static void main(String[] args) {
+     * to console and file, preventing creation of j3270.log.
-        boolean debug = false;
+     */
-        boolean cliTls = false;
+    public static void configureLogging(boolean debug) {
-        boolean cliNoVerifyCert = false;
-        Boolean cliTn3270e = null;
-        Boolean cliAutoSysUnlock = null;
-        GraphicsMode cliGraphicsMode = null;
-        String configFile = null;
-
-        java.util.List<String> remainingArgs = new java.util.ArrayList<>();
-        for (int i = 0; i < args.length; i++) {
-            String arg = args[i];
-            if ("-d".equals(arg) || "--debug".equals(arg)) {
-                debug = true;
-            } else if ("-s".equals(arg) || "--tls".equals(arg) || "--ssl".equals(arg)) {
-                cliTls = true;
-            } else if ("--no-verify-cert".equals(arg) || "--insecure".equals(arg) || "-k".equals(arg)) {
-                cliNoVerifyCert = true;
-            } else if ("--no-tn3270e".equals(arg) || "--plain-tn3270".equals(arg) || "--plain".equals(arg) || "-P".equals(arg) || "-p".equals(arg) || "--non-e".equals(arg)) {
-                cliTn3270e = false;
-            } else if ("--tn3270e".equals(arg)) {
-                cliTn3270e = true;
-            } else if ("--auto-sys-unlock".equals(arg)) {
-                cliAutoSysUnlock = true;
-            } else if ("--no-auto-sys-unlock".equals(arg)) {
-                cliAutoSysUnlock = false;
-            } else if (arg.startsWith("--graphics=")) {
-                cliGraphicsMode = GraphicsMode.fromString(arg.substring(11));
-            } else if (("--graphics".equals(arg) || "-g".equals(arg)) && i + 1 < args.length && !args[i + 1].startsWith("-")) {
-                cliGraphicsMode = GraphicsMode.fromString(args[++i]);
-            } else if ("--no-graphics".equals(arg)) {
-                cliGraphicsMode = GraphicsMode.NONE;
-            } else if (("-c".equals(arg) || "--config".equals(arg)) && i + 1 < args.length) {
-                configFile = args[++i];
-            } else if (arg.startsWith("-")) {
-                System.err.println("Unknown option: " + arg);
-            } else {
-                remainingArgs.add(arg);
-            }
-        }
-
-        Level logLevel = debug ? Level.FINE : Level.INFO;
-
         Logger globalRoot = Logger.getLogger("");
         for (java.util.logging.Handler h : globalRoot.getHandlers()) {
             globalRoot.removeHandler(h);
+            try {
+                h.close();
+            } catch (Exception ignored) {
             }
+        }
+
+        if (debug) {
+            Level logLevel = Level.ALL;
+            globalRoot.setLevel(Level.ALL);
 
             java.util.logging.Filter appFilter = record -> record.getLoggerName() != null &&
                     (record.getLoggerName().startsWith("haus.nightmare") || record.getLoggerName().startsWith("org.pubvm"));
@@ -1077,6 +1114,117 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
             } catch (Exception e) {
                 System.err.println("Could not create j3270.log: " + e.getMessage());
             }
+        } else {
+            globalRoot.setLevel(Level.OFF);
+            for (String pkg : new String[]{"haus.nightmare", "haus.nightmare.j3270", "haus.nightmare.lib3270j", "org.pubvm"}) {
+                Logger l = Logger.getLogger(pkg);
+                l.setLevel(Level.OFF);
+                for (java.util.logging.Handler h : l.getHandlers()) {
+                    l.removeHandler(h);
+                    try {
+                        h.close();
+                    } catch (Exception ignored) {
+                    }
+                }
+            }
+        }
+    }
+
+    private static void applyProxyUrl(ConnectionConfig config, String proxyUrl) {
+        if (config == null || proxyUrl == null || proxyUrl.trim().isEmpty()) return;
+        try {
+            java.net.URI uri = new java.net.URI(proxyUrl.trim());
+            String scheme = uri.getScheme() != null ? uri.getScheme().toLowerCase() : "http";
+            ConnectionConfig.ProxyType pType;
+            int pPort;
+            if (scheme.equals("http") || scheme.equals("https")) {
+                pType = ConnectionConfig.ProxyType.HTTP;
+                pPort = uri.getPort() > 0 ? uri.getPort() : 8080;
+            } else if (scheme.equals("socks4") || scheme.equals("socks4a")) {
+                pType = ConnectionConfig.ProxyType.SOCKS4;
+                pPort = uri.getPort() > 0 ? uri.getPort() : 1080;
+            } else if (scheme.equals("socks5") || scheme.equals("socks")) {
+                pType = ConnectionConfig.ProxyType.SOCKS5;
+                pPort = uri.getPort() > 0 ? uri.getPort() : 1080;
+            } else {
+                return;
+            }
+            String pHost = uri.getHost();
+            String pUser = null;
+            String pPass = null;
+            String userInfo = uri.getUserInfo();
+            if (userInfo != null) {
+                int colon = userInfo.indexOf(':');
+                if (colon >= 0) {
+                    pUser = userInfo.substring(0, colon);
+                    pPass = userInfo.substring(colon + 1);
+                } else {
+                    pUser = userInfo;
+                }
+            }
+            if (pHost != null && !pHost.isEmpty()) {
+                config.setProxy(pType, pHost, pPort, pUser, pPass);
+            }
+        } catch (Exception e) {
+            log.warning("Failed to parse CLI proxy URL: " + proxyUrl);
+        }
+    }
+
+    // ========== Main ==========
+
+    public static void main(String[] args) {
+        boolean debug = false;
+        boolean cliTls = false;
+        boolean cliNoVerifyCert = false;
+        Boolean cliTn3270e = null;
+        Boolean cliAutoSysUnlock = null;
+        GraphicsMode cliGraphicsMode = null;
+        String configFile = null;
+        String cliProxyUrl = null;
+        String cliProfileName = null;
+
+        java.util.List<String> remainingArgs = new java.util.ArrayList<>();
+        for (int i = 0; i < args.length; i++) {
+            String arg = args[i];
+            if ("-d".equals(arg) || "--debug".equals(arg)) {
+                debug = true;
+            } else if ("-s".equals(arg) || "--tls".equals(arg) || "--ssl".equals(arg)) {
+                cliTls = true;
+            } else if ("--no-verify-cert".equals(arg) || "--insecure".equals(arg) || "-k".equals(arg)) {
+                cliNoVerifyCert = true;
+            } else if ("--no-tn3270e".equals(arg) || "--plain-tn3270".equals(arg) || "--plain".equals(arg) || "-P".equals(arg) || "-p".equals(arg) || "--non-e".equals(arg)) {
+                cliTn3270e = false;
+            } else if ("--tn3270e".equals(arg)) {
+                cliTn3270e = true;
+            } else if ("--auto-sys-unlock".equals(arg)) {
+                cliAutoSysUnlock = true;
+            } else if ("--no-auto-sys-unlock".equals(arg)) {
+                cliAutoSysUnlock = false;
+            } else if (arg.startsWith("--graphics=")) {
+                cliGraphicsMode = GraphicsMode.fromString(arg.substring(11));
+            } else if (("--graphics".equals(arg) || "-g".equals(arg)) && i + 1 < args.length && !args[i + 1].startsWith("-")) {
+                cliGraphicsMode = GraphicsMode.fromString(args[++i]);
+            } else if ("--no-graphics".equals(arg)) {
+                cliGraphicsMode = GraphicsMode.NONE;
+            } else if (("-c".equals(arg) || "--config".equals(arg)) && i + 1 < args.length) {
+                configFile = args[++i];
+            } else if (arg.startsWith("--proxy=") || arg.startsWith("-proxy=")) {
+                cliProxyUrl = arg.substring(arg.indexOf('=') + 1).trim();
+            } else if (("--proxy".equals(arg) || "-proxy".equals(arg)) && i + 1 < args.length && !args[i + 1].startsWith("-")) {
+                cliProxyUrl = args[++i].trim();
+            } else if (arg.startsWith("--profile=")) {
+                cliProfileName = arg.substring(arg.indexOf('=') + 1).trim();
+            } else if ("--profile".equals(arg) && i + 1 < args.length && !args[i + 1].startsWith("-")) {
+                cliProfileName = args[++i].trim();
+            } else if (arg.startsWith("-")) {
+                System.err.println("Unknown option: " + arg);
+            } else {
+                remainingArgs.add(arg);
+            }
+        }
+
+        configureLogging(debug);
+
 
         if (configFile != null) {
             try {
@@ -1104,11 +1252,33 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
         final Boolean finalTn3270e = cliTn3270e;
         final Boolean finalAutoSysUnlock = cliAutoSysUnlock;
         final GraphicsMode finalGraphicsMode = cliGraphicsMode;
+        final String finalProxyUrl = cliProxyUrl;
+        final String finalProfileName = cliProfileName;
 
         SwingUtilities.invokeLater(() -> {
             J3270App app = new J3270App();
             app.setVisible(true);
 
+            if (finalProfileName != null) {
+                haus.nightmare.j3270.storage.SavedHost profile = haus.nightmare.j3270.storage.HostStorage.findByName(finalProfileName);
+                if (profile == null) {
+                    profile = haus.nightmare.j3270.storage.HostStorage.findById(finalProfileName);
+                }
+                if (profile != null) {
+                    ConnectionConfig config = profile.toConnectionConfig();
+                    if (finalTls) config.setUseTls(true);
+                    if (finalNoVerify) config.setTlsVerifyCert(false);
+                    if (finalTn3270e != null) config.setTn3270eEnabled(finalTn3270e);
+                    if (finalAutoSysUnlock != null) config.setAutoSysUnlock(finalAutoSysUnlock);
+                    if (finalGraphicsMode != null) config.setGraphicsMode(finalGraphicsMode);
+                    if (finalProxyUrl != null) applyProxyUrl(config, finalProxyUrl);
+                    app.connect(config);
+                    return;
+                } else {
+                    System.err.println("Profile not found: " + finalProfileName);
+                }
+            }
+
             if (!remainingArgs.isEmpty()) {
                 String hostArg = remainingArgs.get(0);
                 int port = finalTls ? 992 : 23;
@@ -1149,6 +1319,9 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
                 } else {
                     config.setGraphicsMode(haus.nightmare.j3270.config.Settings.getGraphicsMode());
                 }
+                if (finalProxyUrl != null) {
+                    applyProxyUrl(config, finalProxyUrl);
+                }
                 app.connect(config);
             } else {
                 haus.nightmare.j3270.config.Settings.StartupBehavior behavior = haus.nightmare.j3270.config.Settings
@@ -1158,6 +1331,17 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
                         SwingUtilities.invokeLater(app::showConnectDialog);
                         break;
                     case AUTO_CONNECT:
+                        haus.nightmare.j3270.storage.SavedHost autoHost = haus.nightmare.j3270.storage.HostStorage.getAutoConnectHost();
+                        if (autoHost != null) {
+                            ConnectionConfig config = autoHost.toConnectionConfig();
+                            if (finalTls) config.setUseTls(true);
+                            if (finalNoVerify) config.setTlsVerifyCert(false);
+                            if (finalTn3270e != null) config.setTn3270eEnabled(finalTn3270e);
+                            if (finalAutoSysUnlock != null) config.setAutoSysUnlock(finalAutoSysUnlock);
+                            if (finalGraphicsMode != null) config.setGraphicsMode(finalGraphicsMode);
+                            if (finalProxyUrl != null) applyProxyUrl(config, finalProxyUrl);
+                            app.connect(config);
+                        } else {
                             String host = haus.nightmare.j3270.config.Settings.getAutoConnectHost();
                             int port = haus.nightmare.j3270.config.Settings.getAutoConnectPort();
                             boolean tls = haus.nightmare.j3270.config.Settings.getAutoConnectTls();
@@ -1167,16 +1351,22 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
                                 ConnectionConfig config = new ConnectionConfig(host, port, TerminalModel.IBM_3279_4, tls);
                                 config.setTlsVerifyCert(verify);
                                 config.setTn3270eEnabled(finalTn3270e != null ? finalTn3270e : tn3270e);
+                                config.setAutoReconnect(haus.nightmare.j3270.config.Settings.getAutoConnectAutoReconnect());
+                                config.setReconnectMaxRetries(haus.nightmare.j3270.config.Settings.getAutoConnectReconnectMaxRetries());
                                 config.setAutoSysUnlock(finalAutoSysUnlock != null ? finalAutoSysUnlock : haus.nightmare.j3270.config.Settings.getAutoSysUnlock());
                                 if (finalGraphicsMode != null) {
                                     config.setGraphicsMode(finalGraphicsMode);
                                 } else {
                                     config.setGraphicsMode(haus.nightmare.j3270.config.Settings.getGraphicsMode());
                                 }
+                                if (finalProxyUrl != null) {
+                                    applyProxyUrl(config, finalProxyUrl);
+                                }
                                 app.connect(config);
                             } else {
                                 SwingUtilities.invokeLater(app::showConnectDialog);
                             }
+                        }
                         break;
                     case DO_NOTHING:
                     default:

j3270/src/main/java/haus/nightmare/j3270/config/Settings.java

@@ -45,6 +45,24 @@ public class Settings {
         flushPrefs();
     }
 
+    public static String getUiFontFamily() {
+        return prefs.get("uiFontFamily", "SansSerif");
+    }
+
+    public static void setUiFontFamily(String family) {
+        prefs.put("uiFontFamily", (family != null && !family.trim().isEmpty()) ? family : "SansSerif");
+        flushPrefs();
+    }
+
+    public static int getUiFontSize() {
+        return prefs.getInt("uiFontSize", 13);
+    }
+
+    public static void setUiFontSize(int size) {
+        prefs.putInt("uiFontSize", Math.max(8, Math.min(size, 48)));
+        flushPrefs();
+    }
+
     private static void flushPrefs() {
         try {
             prefs.flush();
@@ -141,6 +159,14 @@ public class Settings {
         flushPrefs();
     }
 
+    public static boolean getAutoReconnect() {
+        return getAutoConnectAutoReconnect();
+    }
+
+    public static void setAutoReconnect(boolean autoReconnect) {
+        setAutoConnectAutoReconnect(autoReconnect);
+    }
+
     public static int getAutoConnectReconnectMaxRetries() {
         return prefs.getInt("autoConnectReconnectMaxRetries", 5);
     }
@@ -150,6 +176,32 @@ public class Settings {
         flushPrefs();
     }
 
+    public static boolean getInputMask() {
+        return prefs.getBoolean("inputMask", true);
+    }
+
+    public static void setInputMask(boolean mask) {
+        prefs.putBoolean("inputMask", mask);
+        flushPrefs();
+    }
+
+    public static boolean getInputMaskEnabled() {
+        return getInputMask();
+    }
+
+    public static void setInputMaskEnabled(boolean enabled) {
+        setInputMask(enabled);
+    }
+
+    public static String getInputMaskChar() {
+        return prefs.get("inputMaskChar", "*");
+    }
+
+    public static void setInputMaskChar(String ch) {
+        prefs.put("inputMaskChar", (ch != null && !ch.trim().isEmpty()) ? ch.trim().substring(0, 1) : "*");
+        flushPrefs();
+    }
+
     public static haus.nightmare.lib3270j.graphics.GraphicsMode getGraphicsMode() {
         String modeStr = prefs.get("graphicsMode", haus.nightmare.lib3270j.graphics.GraphicsMode.BOTH.name());
         return haus.nightmare.lib3270j.graphics.GraphicsMode.fromString(modeStr);
@@ -356,6 +408,17 @@ public class Settings {
         prefs.putBoolean("blockSelectMode", block);
     }
 
+    // ========== Block paste ==========
+
+    public static boolean getBlockPaste() {
+        return prefs.getBoolean("blockPaste", true);
+    }
+
+    public static void setBlockPaste(boolean block) {
+        prefs.putBoolean("blockPaste", block);
+        flushPrefs();
+    }
+
     // ========== Clipboard & Tabular Paste ==========
 
     public static boolean getEnablePasteFromExcel() {
@@ -376,6 +439,33 @@ public class Settings {
         flushPrefs();
     }
 
+    public static boolean getTrimRectSizingHandles() {
+        return prefs.getBoolean("trimRectSizingHandles", false);
+    }
+
+    public static void setTrimRectSizingHandles(boolean val) {
+        prefs.putBoolean("trimRectSizingHandles", val);
+        flushPrefs();
+    }
+
+    public static boolean getTrimRectRemainAfterEdit() {
+        return prefs.getBoolean("trimRectRemainAfterEdit", false);
+    }
+
+    public static void setTrimRectRemainAfterEdit(boolean val) {
+        prefs.putBoolean("trimRectRemainAfterEdit", val);
+        flushPrefs();
+    }
+
+    public static boolean getPasteWordBreak() {
+        return prefs.getBoolean("pasteWordBreak", true);
+    }
+
+    public static void setPasteWordBreak(boolean val) {
+        prefs.putBoolean("pasteWordBreak", val);
+        flushPrefs();
+    }
+
     // ========== Crosshair Ruler ==========
 
     public static boolean getCrosshairRuler() {
@@ -386,6 +476,71 @@ public class Settings {
         prefs.putBoolean("crosshairRuler", enabled);
     }
 
+    // ========== Phase 25: Hotspots & Mouse Wheel Navigation ==========
+
+    public static boolean getHotspotsEnabled() {
+        return prefs.getBoolean("hotspotsEnabled", true);
+    }
+
+    public static void setHotspotsEnabled(boolean enabled) {
+        prefs.putBoolean("hotspotsEnabled", enabled);
+        flushPrefs();
+    }
+
+    public static boolean getHotspotsUrlEnabled() {
+        return prefs.getBoolean("hotspotsUrlEnabled", true);
+    }
+
+    public static void setHotspotsUrlEnabled(boolean enabled) {
+        prefs.putBoolean("hotspotsUrlEnabled", enabled);
+        flushPrefs();
+    }
+
+    public static boolean getHotspotsPfEnabled() {
+        return prefs.getBoolean("hotspotsPfEnabled", true);
+    }
+
+    public static void setHotspotsPfEnabled(boolean enabled) {
+        prefs.putBoolean("hotspotsPfEnabled", enabled);
+        flushPrefs();
+    }
+
+    public static boolean getHotspotsMenuChoicesEnabled() {
+        return prefs.getBoolean("hotspotsMenuChoicesEnabled", true);
+    }
+
+    public static void setHotspotsMenuChoicesEnabled(boolean enabled) {
+        prefs.putBoolean("hotspotsMenuChoicesEnabled", enabled);
+        flushPrefs();
+    }
+
+    public static boolean getMouseWheelEnabled() {
+        return prefs.getBoolean("mouseWheelEnabled", true);
+    }
+
+    public static void setMouseWheelEnabled(boolean enabled) {
+        prefs.putBoolean("mouseWheelEnabled", enabled);
+        flushPrefs();
+    }
+
+    public static String getMouseWheelUpKey() {
+        return prefs.get("mouseWheelUpKey", "[pf7]");
+    }
+
+    public static void setMouseWheelUpKey(String key) {
+        prefs.put("mouseWheelUpKey", key != null && !key.trim().isEmpty() ? key.trim() : "[pf7]");
+        flushPrefs();
+    }
+
+    public static String getMouseWheelDownKey() {
+        return prefs.get("mouseWheelDownKey", "[pf8]");
+    }
+
+    public static void setMouseWheelDownKey(String key) {
+        prefs.put("mouseWheelDownKey", key != null && !key.trim().isEmpty() ? key.trim() : "[pf8]");
+        flushPrefs();
+    }
+
     // ========== Status Bar Visibility ==========
 
     public static boolean getStatusBarVisible() {
@@ -507,6 +662,16 @@ public class Settings {
                 switch (key) {
                     case "fontFamily": setFontFamily(value); break;
                     case "fontSize": setFontSize(Integer.parseInt(value)); break;
+                    case "uiFontFamily":
+                    case "uifontfamily":
+                    case "uifont":
+                    case "uiFont":
+                        setUiFontFamily(value);
+                        break;
+                    case "uiFontSize":
+                    case "uifontsize":
+                        setUiFontSize(Integer.parseInt(value));
+                        break;
                     case "javaUiTheme":
                     case "theme":
                     case "uiTheme":
@@ -574,10 +739,34 @@ public class Settings {
                         setDynamicCols(Integer.parseInt(value));
                         break;
                     case "blockSelectMode": setBlockSelectMode(Boolean.parseBoolean(value)); break;
+                    case "blockPaste": setBlockPaste(Boolean.parseBoolean(value)); break;
+                    case "autoReconnect":
+                    case "auto_reconnect":
+                    case "autoConnectAutoReconnect":
+                        setAutoConnectAutoReconnect(Boolean.parseBoolean(value));
+                        break;
+                    case "reconnectMaxRetries":
+                    case "autoConnectReconnectMaxRetries":
+                        setAutoConnectReconnectMaxRetries(Integer.parseInt(value));
+                        break;
+                    case "inputMask":
+                    case "input_mask":
+                    case "inputMaskEnabled":
+                    case "maskInput":
+                        setInputMask(Boolean.parseBoolean(value));
+                        break;
+                    case "inputMaskChar":
+                    case "input_mask_char":
+                    case "maskChar":
+                        setInputMaskChar(value);
+                        break;
                     case "autoSysUnlock":
                     case "auto_sys_unlock":
                         setAutoSysUnlock(Boolean.parseBoolean(value));
                         break;
+                    case "blockPasteMode":
+                        setBlockPaste(Boolean.parseBoolean(value));
+                        break;
                     case "enablePasteFromExcel":
                     case "pasteFromExcel":
                     case "excelPaste":
@@ -588,6 +777,18 @@ public class Settings {
                     case "pasteStopAtProtected":
                         setPasteStopAtProtectedLine(Boolean.parseBoolean(value));
                         break;
+                    case "trimRectSizingHandles":
+                    case "sizingHandles":
+                        setTrimRectSizingHandles(Boolean.parseBoolean(value));
+                        break;
+                    case "trimRectRemainAfterEdit":
+                    case "remainAfterEdit":
+                        setTrimRectRemainAfterEdit(Boolean.parseBoolean(value));
+                        break;
+                    case "pasteWordBreak":
+                    case "wordBreak":
+                        setPasteWordBreak(Boolean.parseBoolean(value));
+                        break;
                     default:
                         log.warning("Unknown behavior/connection key: " + key);
                 }
@@ -595,6 +796,10 @@ public class Settings {
 
             case "clipboard":
                 switch (key) {
+                    case "blockPaste":
+                    case "blockPasteMode":
+                        setBlockPaste(Boolean.parseBoolean(value));
+                        break;
                     case "enablePasteFromExcel":
                     case "pasteFromExcel":
                     case "excelPaste":
@@ -605,6 +810,18 @@ public class Settings {
                     case "pasteStopAtProtected":
                         setPasteStopAtProtectedLine(Boolean.parseBoolean(value));
                         break;
+                    case "trimRectSizingHandles":
+                    case "sizingHandles":
+                        setTrimRectSizingHandles(Boolean.parseBoolean(value));
+                        break;
+                    case "trimRectRemainAfterEdit":
+                    case "remainAfterEdit":
+                        setTrimRectRemainAfterEdit(Boolean.parseBoolean(value));
+                        break;
+                    case "pasteWordBreak":
+                    case "wordBreak":
+                        setPasteWordBreak(Boolean.parseBoolean(value));
+                        break;
                     default:
                         log.warning("Unknown clipboard key: " + key);
                 }
@@ -707,6 +924,8 @@ public class Settings {
             // [appearance]
             w.println("[appearance]");
             w.println("javaUiTheme = " + getJavaUiTheme().name());
+            w.println("uiFontFamily = " + getUiFontFamily());
+            w.println("uiFontSize = " + getUiFontSize());
             w.println("fontFamily = " + getFontFamily());
             w.println("fontSize = " + getFontSize());
             w.println("crosshairRuler = " + getCrosshairRuler());
@@ -729,9 +948,17 @@ public class Settings {
             w.println("dynamicRows = " + getDynamicRows());
             w.println("dynamicCols = " + getDynamicCols());
             w.println("blockSelectMode = " + getBlockSelectMode());
+            w.println("blockPaste = " + getBlockPaste());
+            w.println("autoReconnect = " + getAutoConnectAutoReconnect());
+            w.println("autoConnectReconnectMaxRetries = " + getAutoConnectReconnectMaxRetries());
+            w.println("inputMask = " + getInputMask());
+            w.println("inputMaskChar = " + getInputMaskChar());
             w.println("autoSysUnlock = " + getAutoSysUnlock());
             w.println("enablePasteFromExcel = " + getEnablePasteFromExcel());
             w.println("pasteStopAtProtectedLine = " + getPasteStopAtProtectedLine());
+            w.println("trimRectSizingHandles = " + getTrimRectSizingHandles());
+            w.println("trimRectRemainAfterEdit = " + getTrimRectRemainAfterEdit());
+            w.println("pasteWordBreak = " + getPasteWordBreak());
             w.println();
 
             // [entryassist]

j3270/src/main/java/haus/nightmare/j3270/ft/FileTransferDialog.java

@@ -1,5 +1,6 @@
 package haus.nightmare.j3270.ft;
 
+import haus.nightmare.j3270.ui.AppIcon;
 import haus.nightmare.j3270.ui.HostDirectoryDialog;
 import haus.nightmare.j3270.ui.ThemeManager;
 import haus.nightmare.lib3270j.ft.FTConfig;
@@ -92,6 +93,7 @@ public class FileTransferDialog extends JDialog {
         super(owner, "File Transfer (IND$FILE)", false);
         this.owner = owner;
         this.coordinator = coordinator;
+        AppIcon.applyTo(this);
         
         buildUI();
         pack();

j3270/src/main/java/haus/nightmare/j3270/storage/HostStorage.java

@@ -0,0 +1,433 @@
+package haus.nightmare.j3270.storage;
+
+import java.util.*;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.util.prefs.Preferences;
+
+/**
+ * Storage manager for saved host profiles, maintaining 1:1 format compatibility with a3270.
+ * Persists profiles in Java user preferences with JSON serialization.
+ */
+public class HostStorage {
+
+    private static final Logger log = Logger.getLogger(HostStorage.class.getName());
+    private static final Preferences prefs = Preferences.userNodeForPackage(HostStorage.class);
+    public static final String KEY_SAVED_HOSTS = "saved_hosts";
+
+    public static synchronized List<SavedHost> getSavedHosts() {
+        String jsonStr = prefs.get(KEY_SAVED_HOSTS, null);
+        if (jsonStr == null || jsonStr.trim().isEmpty()) {
+            return new ArrayList<>();
+        }
+        try {
+            return parseHostsJson(jsonStr);
+        } catch (Exception e) {
+            log.log(Level.WARNING, "Failed to parse saved hosts JSON", e);
+            return new ArrayList<>();
+        }
+    }
+
+    public static synchronized void saveHost(SavedHost host) {
+        if (host == null) return;
+        List<SavedHost> current = new ArrayList<>(getSavedHosts());
+        int index = -1;
+        for (int i = 0; i < current.size(); i++) {
+            if (Objects.equals(current.get(i).getId(), host.getId())) {
+                index = i;
+                break;
+            }
+        }
+
+        // If this host is set to autoConnect, clear autoConnect on all others
+        SavedHost hostToSave = host.copy();
+        if (hostToSave.isAutoConnect()) {
+            for (int i = 0; i < current.size(); i++) {
+                current.get(i).setAutoConnect(false);
+            }
+        }
+
+        if (index >= 0) {
+            current.set(index, hostToSave);
+        } else {
+            current.add(hostToSave);
+        }
+        saveAll(current);
+    }
+
+    public static synchronized void deleteHost(String hostId) {
+        if (hostId == null) return;
+        List<SavedHost> current = new ArrayList<>(getSavedHosts());
+        current.removeIf(h -> Objects.equals(h.getId(), hostId));
+        saveAll(current);
+    }
+
+    public static synchronized SavedHost getAutoConnectHost() {
+        for (SavedHost h : getSavedHosts()) {
+            if (h.isAutoConnect()) {
+                return h;
+            }
+        }
+        return null;
+    }
+
+    public static synchronized SavedHost findById(String id) {
+        if (id == null) return null;
+        for (SavedHost h : getSavedHosts()) {
+            if (id.equals(h.getId())) {
+                return h;
+            }
+        }
+        return null;
+    }
+
+    public static synchronized SavedHost findByName(String name) {
+        if (name == null) return null;
+        for (SavedHost h : getSavedHosts()) {
+            if (name.equalsIgnoreCase(h.getName())) {
+                return h;
+            }
+        }
+        return null;
+    }
+
+    public static synchronized void saveAll(List<SavedHost> hosts) {
+        if (hosts == null) return;
+        String json = serializeHostsJson(hosts);
+        prefs.put(KEY_SAVED_HOSTS, json);
+        try {
+            prefs.flush();
+        } catch (Exception ignored) {
+        }
+    }
+
+    public static synchronized void clearAll() {
+        prefs.remove(KEY_SAVED_HOSTS);
+        try {
+            prefs.flush();
+        } catch (Exception ignored) {
+        }
+    }
+
+    // ================= JSON Serialization =================
+
+    public static String serializeHostsJson(List<SavedHost> hosts) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("[\n");
+        for (int i = 0; i < hosts.size(); i++) {
+            SavedHost h = hosts.get(i);
+            sb.append("  ").append(serializeHostJson(h));
+            if (i < hosts.size() - 1) {
+                sb.append(",");
+            }
+            sb.append("\n");
+        }
+        sb.append("]");
+        return sb.toString();
+    }
+
+    public static String serializeHostJson(SavedHost h) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("{");
+        appendField(sb, "id", h.getId(), true);
+        appendField(sb, "name", h.getName(), true);
+        appendField(sb, "host", h.getHost(), true);
+        appendField(sb, "port", h.getPort(), true);
+        appendField(sb, "model", h.getModel(), true);
+        appendField(sb, "dynamicRows", h.getDynamicRows(), true);
+        appendField(sb, "dynamicCols", h.getDynamicCols(), true);
+        appendField(sb, "luName", h.getLuName(), true);
+        appendField(sb, "autoConnect", h.isAutoConnect(), true);
+        appendField(sb, "hostType", h.getHostType(), true);
+        appendField(sb, "useTls", h.isUseTls(), true);
+        appendField(sb, "tlsVerifyCert", h.isTlsVerifyCert(), true);
+        appendField(sb, "tn3270e", h.isTn3270e(), true);
+        appendField(sb, "graphicsMode", h.getGraphicsMode(), true);
+        appendField(sb, "codePage", h.getCodePage(), true);
+        appendField(sb, "proxyType", h.getProxyType(), true);
+        appendField(sb, "proxyHost", h.getProxyHost(), true);
+        appendField(sb, "proxyPort", h.getProxyPort(), true);
+        appendField(sb, "proxyUsername", h.getProxyUsername(), true);
+        appendField(sb, "proxyPassword", h.getProxyPassword(), false);
+        sb.append("}");
+        return sb.toString();
+    }
+
+    private static void appendField(StringBuilder sb, String key, String val, boolean comma) {
+        sb.append("\"").append(key).append("\":\"").append(escapeJson(val != null ? val : "")).append("\"");
+        if (comma) sb.append(",");
+    }
+
+    private static void appendField(StringBuilder sb, String key, int val, boolean comma) {
+        sb.append("\"").append(key).append("\":").append(val);
+        if (comma) sb.append(",");
+    }
+
+    private static void appendField(StringBuilder sb, String key, boolean val, boolean comma) {
+        sb.append("\"").append(key).append("\":").append(val);
+        if (comma) sb.append(",");
+    }
+
+    private static String escapeJson(String s) {
+        if (s == null) return "";
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < s.length(); i++) {
+            char c = s.charAt(i);
+            switch (c) {
+                case '"': sb.append("\\\""); break;
+                case '\\': sb.append("\\\\"); break;
+                case '\b': sb.append("\\b"); break;
+                case '\f': sb.append("\\f"); break;
+                case '\n': sb.append("\\n"); break;
+                case '\r': sb.append("\\r"); break;
+                case '\t': sb.append("\\t"); break;
+                default:
+                    if (c < 32) {
+                        sb.append(String.format("\\u%04x", (int) c));
+                    } else {
+                        sb.append(c);
+                    }
+                    break;
+            }
+        }
+        return sb.toString();
+    }
+
+    // ================= JSON Deserialization =================
+
+    public static List<SavedHost> parseHostsJson(String json) {
+        List<SavedHost> list = new ArrayList<>();
+        if (json == null || json.trim().isEmpty()) return list;
+
+        SimpleJsonParser parser = new SimpleJsonParser(json);
+        Object root = parser.parseValue();
+        if (root instanceof List) {
+            for (Object item : (List<?>) root) {
+                if (item instanceof Map) {
+                    @SuppressWarnings("unchecked")
+                    Map<String, Object> map = (Map<String, Object>) item;
+                    list.add(fromMap(map));
+                }
+            }
+        } else if (root instanceof Map) {
+            @SuppressWarnings("unchecked")
+            Map<String, Object> map = (Map<String, Object>) root;
+            list.add(fromMap(map));
+        }
+        return list;
+    }
+
+    public static SavedHost fromMap(Map<String, Object> map) {
+        SavedHost h = new SavedHost();
+        if (map.containsKey("id")) h.setId(String.valueOf(map.get("id")));
+        if (map.containsKey("name")) h.setName(String.valueOf(map.get("name")));
+        if (map.containsKey("host")) h.setHost(String.valueOf(map.get("host")));
+        if (map.containsKey("port")) h.setPort(parseInt(map.get("port"), 23));
+        if (map.containsKey("model")) h.setModel(parseInt(map.get("model"), 4));
+        if (map.containsKey("dynamicRows")) h.setDynamicRows(parseInt(map.get("dynamicRows"), 62));
+        if (map.containsKey("dynamicCols")) h.setDynamicCols(parseInt(map.get("dynamicCols"), 160));
+        if (map.containsKey("luName")) h.setLuName(String.valueOf(map.get("luName")));
+        if (map.containsKey("autoConnect")) h.setAutoConnect(parseBool(map.get("autoConnect"), false));
+        if (map.containsKey("hostType")) h.setHostType(String.valueOf(map.get("hostType")));
+        if (map.containsKey("useTls")) h.setUseTls(parseBool(map.get("useTls"), false));
+        if (map.containsKey("tlsVerifyCert")) h.setTlsVerifyCert(parseBool(map.get("tlsVerifyCert"), true));
+        if (map.containsKey("tn3270e")) h.setTn3270e(parseBool(map.get("tn3270e"), true));
+        if (map.containsKey("graphicsMode")) {
+            String gm = String.valueOf(map.get("graphicsMode"));
+            h.setGraphicsMode(gm);
+        }
+        if (map.containsKey("codePage")) h.setCodePage(String.valueOf(map.get("codePage")));
+        if (map.containsKey("proxyType")) h.setProxyType(String.valueOf(map.get("proxyType")));
+        if (map.containsKey("proxyHost")) h.setProxyHost(String.valueOf(map.get("proxyHost")));
+        if (map.containsKey("proxyPort")) h.setProxyPort(parseInt(map.get("proxyPort"), 0));
+        if (map.containsKey("proxyUsername")) h.setProxyUsername(String.valueOf(map.get("proxyUsername")));
+        if (map.containsKey("proxyPassword")) h.setProxyPassword(String.valueOf(map.get("proxyPassword")));
+        return h;
+    }
+
+    private static int parseInt(Object obj, int def) {
+        if (obj == null) return def;
+        if (obj instanceof Number) return ((Number) obj).intValue();
+        try {
+            return Integer.parseInt(String.valueOf(obj).trim());
+        } catch (Exception e) {
+            return def;
+        }
+    }
+
+    private static boolean parseBool(Object obj, boolean def) {
+        if (obj == null) return def;
+        if (obj instanceof Boolean) return (Boolean) obj;
+        return Boolean.parseBoolean(String.valueOf(obj).trim());
+    }
+
+    /**
+     * Minimal pure-Java JSON parser for nested Maps, Lists, Strings, Numbers, and Booleans.
+     */
+    static class SimpleJsonParser {
+        private final String src;
+        private int pos = 0;
+
+        SimpleJsonParser(String src) {
+            this.src = src;
+        }
+
+        Object parseValue() {
+            skipWhitespace();
+            if (pos >= src.length()) return null;
+            char c = src.charAt(pos);
+            if (c == '{') return parseObject();
+            if (c == '[') return parseArray();
+            if (c == '"') return parseString();
+            if (c == 't' || c == 'f') return parseBoolean();
+            if (c == 'n') return parseNull();
+            if (c == '-' || Character.isDigit(c)) return parseNumber();
+            throw new IllegalArgumentException("Unexpected char '" + c + "' at position " + pos);
+        }
+
+        private Map<String, Object> parseObject() {
+            match('{');
+            Map<String, Object> map = new LinkedHashMap<>();
+            skipWhitespace();
+            if (peek() == '}') {
+                pos++;
+                return map;
+            }
+            while (true) {
+                skipWhitespace();
+                String key = parseString();
+                skipWhitespace();
+                match(':');
+                Object val = parseValue();
+                map.put(key, val);
+                skipWhitespace();
+                char c = peek();
+                if (c == ',') {
+                    pos++;
+                } else if (c == '}') {
+                    pos++;
+                    break;
+                } else {
+                    break;
+                }
+            }
+            return map;
+        }
+
+        private List<Object> parseArray() {
+            match('[');
+            List<Object> list = new ArrayList<>();
+            skipWhitespace();
+            if (peek() == ']') {
+                pos++;
+                return list;
+            }
+            while (true) {
+                Object val = parseValue();
+                list.add(val);
+                skipWhitespace();
+                char c = peek();
+                if (c == ',') {
+                    pos++;
+                } else if (c == ']') {
+                    pos++;
+                    break;
+                } else {
+                    break;
+                }
+            }
+            return list;
+        }
+
+        private String parseString() {
+            match('"');
+            StringBuilder sb = new StringBuilder();
+            while (pos < src.length()) {
+                char c = src.charAt(pos++);
+                if (c == '"') {
+                    return sb.toString();
+                } else if (c == '\\') {
+                    if (pos >= src.length()) break;
+                    char esc = src.charAt(pos++);
+                    switch (esc) {
+                        case '"': sb.append('"'); break;
+                        case '\\': sb.append('\\'); break;
+                        case '/': sb.append('/'); break;
+                        case 'b': sb.append('\b'); break;
+                        case 'f': sb.append('\f'); break;
+                        case 'n': sb.append('\n'); break;
+                        case 'r': sb.append('\r'); break;
+                        case 't': sb.append('\t'); break;
+                        case 'u':
+                            if (pos + 4 <= src.length()) {
+                                String hex = src.substring(pos, pos + 4);
+                                pos += 4;
+                                try {
+                                    sb.append((char) Integer.parseInt(hex, 16));
+                                } catch (NumberFormatException e) {
+                                    sb.append("?");
+                                }
+                            }
+                            break;
+                        default:
+                            sb.append(esc);
+                            break;
+                    }
+                } else {
+                    sb.append(c);
+                }
+            }
+            return sb.toString();
+        }
+
+        private Boolean parseBoolean() {
+            if (src.startsWith("true", pos)) {
+                pos += 4;
+                return true;
+            } else if (src.startsWith("false", pos)) {
+                pos += 5;
+                return false;
+            }
+            throw new IllegalArgumentException("Expected boolean at " + pos);
+        }
+
+        private Object parseNull() {
+            if (src.startsWith("null", pos)) {
+                pos += 4;
+                return null;
+            }
+            throw new IllegalArgumentException("Expected null at " + pos);
+        }
+
+        private Number parseNumber() {
+            int start = pos;
+            if (src.charAt(pos) == '-') pos++;
+            while (pos < src.length() && (Character.isDigit(src.charAt(pos)) || src.charAt(pos) == '.' || src.charAt(pos) == 'e' || src.charAt(pos) == 'E' || src.charAt(pos) == '+' || src.charAt(pos) == '-')) {
+                pos++;
+            }
+            String numStr = src.substring(start, pos);
+            if (numStr.contains(".")) {
+                return Double.parseDouble(numStr);
+            }
+            return Long.parseLong(numStr);
+        }
+
+        private void skipWhitespace() {
+            while (pos < src.length() && Character.isWhitespace(src.charAt(pos))) {
+                pos++;
+            }
+        }
+
+        private char peek() {
+            return pos < src.length() ? src.charAt(pos) : '\0';
+        }
+
+        private void match(char expected) {
+            skipWhitespace();
+            if (pos >= src.length() || src.charAt(pos) != expected) {
+                throw new IllegalArgumentException("Expected '" + expected + "' at " + pos);
+            }
+            pos++;
+        }
+    }
+}

j3270/src/main/java/haus/nightmare/j3270/storage/SavedHost.java

@@ -0,0 +1,222 @@
+package haus.nightmare.j3270.storage;
+
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.TerminalModel;
+import haus.nightmare.lib3270j.graphics.GraphicsMode;
+
+import java.util.Objects;
+import java.util.UUID;
+
+/**
+ * Data model for a saved 3270 connection profile, matching the schema of a3270 SavedHost.
+ * Includes per-connection host, model, protocol, and proxy configuration.
+ */
+public class SavedHost {
+
+    private String id;
+    private String name;
+    private String host;
+    private int port;
+    private int model;
+    private int dynamicRows;
+    private int dynamicCols;
+    private String luName;
+    private boolean autoConnect;
+    private String hostType;
+    private boolean useTls;
+    private boolean tlsVerifyCert;
+    private boolean tn3270e;
+    private String graphicsMode;
+    private String codePage;
+
+    // Per-connection proxy configuration
+    private String proxyType;
+    private String proxyHost;
+    private int proxyPort;
+    private String proxyUsername;
+    private String proxyPassword;
+
+    public SavedHost() {
+        this.id = UUID.randomUUID().toString();
+        this.name = "Mainframe";
+        this.host = "127.0.0.1";
+        this.port = 23;
+        this.model = 4;
+        this.dynamicRows = 62;
+        this.dynamicCols = 160;
+        this.luName = "";
+        this.autoConnect = false;
+        this.hostType = "TSO";
+        this.useTls = false;
+        this.tlsVerifyCert = true;
+        this.tn3270e = true;
+        this.graphicsMode = "BOTH";
+        this.codePage = "037";
+        this.proxyType = "NONE";
+        this.proxyHost = "";
+        this.proxyPort = 0;
+        this.proxyUsername = "";
+        this.proxyPassword = "";
+    }
+
+    public SavedHost(String id, String name, String host, int port, int model,
+                     int dynamicRows, int dynamicCols, String luName, boolean autoConnect,
+                     String hostType, boolean useTls, boolean tlsVerifyCert, boolean tn3270e,
+                     String graphicsMode, String codePage, String proxyType, String proxyHost,
+                     int proxyPort, String proxyUsername, String proxyPassword) {
+        this.id = (id != null && !id.trim().isEmpty()) ? id : UUID.randomUUID().toString();
+        this.name = name != null ? name : "";
+        this.host = host != null ? host : "127.0.0.1";
+        this.port = port > 0 ? port : 23;
+        this.model = model;
+        this.dynamicRows = dynamicRows > 0 ? dynamicRows : 62;
+        this.dynamicCols = dynamicCols > 0 ? dynamicCols : 160;
+        this.luName = luName != null ? luName : "";
+        this.autoConnect = autoConnect;
+        this.hostType = hostType != null ? hostType : "TSO";
+        this.useTls = useTls;
+        this.tlsVerifyCert = tlsVerifyCert;
+        this.tn3270e = tn3270e;
+        this.graphicsMode = graphicsMode != null ? graphicsMode : "BOTH";
+        this.codePage = codePage != null ? codePage : "037";
+        this.proxyType = (proxyType != null && !proxyType.trim().isEmpty()) ? proxyType.toUpperCase() : "NONE";
+        this.proxyHost = proxyHost != null ? proxyHost : "";
+        this.proxyPort = proxyPort;
+        this.proxyUsername = proxyUsername != null ? proxyUsername : "";
+        this.proxyPassword = proxyPassword != null ? proxyPassword : "";
+    }
+
+    public SavedHost copy() {
+        return new SavedHost(id, name, host, port, model, dynamicRows, dynamicCols, luName,
+                autoConnect, hostType, useTls, tlsVerifyCert, tn3270e, graphicsMode, codePage,
+                proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword);
+    }
+
+    /**
+     * Converts this saved host profile into an active ConnectionConfig.
+     */
+    public ConnectionConfig toConnectionConfig() {
+        TerminalModel tm;
+        if (model == 0) {
+            tm = TerminalModel.IBM_DYNAMIC;
+        } else {
+            try {
+                tm = TerminalModel.forModel(model, true);
+            } catch (Exception e) {
+                tm = TerminalModel.IBM_3279_4;
+            }
+        }
+
+        ConnectionConfig config = new ConnectionConfig(host, port, tm, useTls);
+        if (model == 0 || tm.isDynamic()) {
+            config.setDynamicDimensions(dynamicRows, dynamicCols);
+        }
+        if (luName != null && !luName.trim().isEmpty()) {
+            config.setLuName(luName.trim());
+        }
+        config.setTlsVerifyCert(tlsVerifyCert);
+        config.setTn3270eEnabled(tn3270e);
+        if (graphicsMode != null && !graphicsMode.isEmpty()) {
+            config.setGraphicsMode(GraphicsMode.fromString(graphicsMode));
+        }
+        if (codePage != null && !codePage.isEmpty()) {
+            config.setCodePage(codePage);
+        }
+
+        // Apply per-connection proxy if configured
+        if (proxyType != null && !proxyType.equalsIgnoreCase("NONE") && proxyHost != null && !proxyHost.trim().isEmpty()) {
+            try {
+                ConnectionConfig.ProxyType pt = ConnectionConfig.ProxyType.valueOf(proxyType.toUpperCase());
+                int pPort = proxyPort > 0 ? proxyPort : (pt == ConnectionConfig.ProxyType.HTTP ? 8080 : 1080);
+                config.setProxy(pt, proxyHost.trim(), pPort,
+                        (proxyUsername != null && !proxyUsername.trim().isEmpty()) ? proxyUsername.trim() : null,
+                        (proxyPassword != null && !proxyPassword.isEmpty()) ? proxyPassword : null);
+            } catch (IllegalArgumentException ignored) {
+            }
+        }
+        return config;
+    }
+
+    // Getters and Setters
+
+    public String getId() { return id; }
+    public void setId(String id) { this.id = id; }
+
+    public String getName() { return name; }
+    public void setName(String name) { this.name = name; }
+
+    public String getHost() { return host; }
+    public void setHost(String host) { this.host = host; }
+
+    public int getPort() { return port; }
+    public void setPort(int port) { this.port = port; }
+
+    public int getModel() { return model; }
+    public void setModel(int model) { this.model = model; }
+
+    public int getDynamicRows() { return dynamicRows; }
+    public void setDynamicRows(int dynamicRows) { this.dynamicRows = dynamicRows; }
+
+    public int getDynamicCols() { return dynamicCols; }
+    public void setDynamicCols(int dynamicCols) { this.dynamicCols = dynamicCols; }
+
+    public String getLuName() { return luName; }
+    public void setLuName(String luName) { this.luName = luName; }
+
+    public boolean isAutoConnect() { return autoConnect; }
+    public void setAutoConnect(boolean autoConnect) { this.autoConnect = autoConnect; }
+
+    public String getHostType() { return hostType; }
+    public void setHostType(String hostType) { this.hostType = hostType; }
+
+    public boolean isUseTls() { return useTls; }
+    public void setUseTls(boolean useTls) { this.useTls = useTls; }
+
+    public boolean isTlsVerifyCert() { return tlsVerifyCert; }
+    public void setTlsVerifyCert(boolean tlsVerifyCert) { this.tlsVerifyCert = tlsVerifyCert; }
+
+    public boolean isTn3270e() { return tn3270e; }
+    public void setTn3270e(boolean tn3270e) { this.tn3270e = tn3270e; }
+
+    public String getGraphicsMode() { return graphicsMode; }
+    public void setGraphicsMode(String graphicsMode) { this.graphicsMode = graphicsMode; }
+
+    public String getCodePage() { return codePage; }
+    public void setCodePage(String codePage) { this.codePage = codePage; }
+
+    public String getProxyType() { return proxyType != null ? proxyType : "NONE"; }
+    public void setProxyType(String proxyType) { this.proxyType = (proxyType != null) ? proxyType.toUpperCase() : "NONE"; }
+
+    public String getProxyHost() { return proxyHost != null ? proxyHost : ""; }
+    public void setProxyHost(String proxyHost) { this.proxyHost = proxyHost; }
+
+    public int getProxyPort() { return proxyPort; }
+    public void setProxyPort(int proxyPort) { this.proxyPort = proxyPort; }
+
+    public String getProxyUsername() { return proxyUsername != null ? proxyUsername : ""; }
+    public void setProxyUsername(String proxyUsername) { this.proxyUsername = proxyUsername; }
+
+    public String getProxyPassword() { return proxyPassword != null ? proxyPassword : ""; }
+    public void setProxyPassword(String proxyPassword) { this.proxyPassword = proxyPassword; }
+
+    @Override
+    public String toString() {
+        if (name != null && !name.trim().isEmpty()) {
+            return name;
+        }
+        return host + (port > 0 ? ":" + port : "");
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        SavedHost savedHost = (SavedHost) o;
+        return Objects.equals(id, savedHost.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+}

j3270/src/main/java/haus/nightmare/j3270/ui/AppIcon.java

@@ -0,0 +1,138 @@
+package haus.nightmare.j3270.ui;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Utility for loading and applying application window and taskbar icons.
+ * Loads multi-resolution lib3270j icons from resources.
+ */
+public final class AppIcon {
+
+    private static final Logger log = Logger.getLogger(AppIcon.class.getName());
+
+    private static final int[] ICON_SIZES = {16, 24, 32, 48, 64, 128, 256, 512};
+    private static List<Image> cachedIcons = null;
+    private static Image defaultIcon = null;
+
+    private AppIcon() {}
+
+    /**
+     * Retrieves the list of available application icon images in various resolutions.
+     *
+     * @return an unmodifiable list of Image objects, or empty list if none could be loaded.
+     */
+    public static synchronized List<Image> getAppIcons() {
+        if (cachedIcons == null) {
+            loadIcons();
+        }
+        return cachedIcons;
+    }
+
+    /**
+     * Retrieves the default application icon image (256x256 or best available).
+     *
+     * @return the default Image, or null if no icon is available.
+     */
+    public static synchronized Image getDefaultIcon() {
+        if (cachedIcons == null) {
+            loadIcons();
+        }
+        return defaultIcon;
+    }
+
+    /**
+     * Applies the application icons to a target Window (JFrame, JDialog, etc.)
+     * and updates the desktop Taskbar icon if supported.
+     *
+     * @param window the Window to set icon images for.
+     */
+    public static void applyTo(Window window) {
+        if (GraphicsEnvironment.isHeadless()) {
+            return;
+        }
+
+        List<Image> icons = getAppIcons();
+        if (icons.isEmpty()) {
+            return;
+        }
+
+        if (window != null) {
+            window.setIconImages(icons);
+        }
+
+        // Apply to OS Taskbar / Dock if supported (Java 9+)
+        try {
+            if (Taskbar.isTaskbarSupported()) {
+                Taskbar taskbar = Taskbar.getTaskbar();
+                if (taskbar.isSupported(Taskbar.Feature.ICON_IMAGE)) {
+                    Image bestIcon = defaultIcon != null ? defaultIcon : icons.get(icons.size() - 1);
+                    taskbar.setIconImage(bestIcon);
+                }
+            }
+        } catch (Throwable t) {
+            log.log(Level.FINE, "Taskbar icon could not be set: {0}", t.getMessage());
+        }
+    }
+
+    private static void loadIcons() {
+        List<Image> icons = new ArrayList<>();
+
+        for (int size : ICON_SIZES) {
+            String path = "/icons/lib3270j_" + size + ".png";
+            Image img = loadImage(path);
+            if (img != null) {
+                icons.add(img);
+            }
+        }
+
+        if (icons.isEmpty()) {
+            Image img = loadImage("/icons/lib3270j.png");
+            if (img != null) {
+                icons.add(img);
+            }
+        }
+
+        if (!icons.isEmpty()) {
+            for (Image img : icons) {
+                if (img.getWidth(null) == 256) {
+                    defaultIcon = img;
+                    break;
+                }
+            }
+            if (defaultIcon == null) {
+                defaultIcon = icons.get(icons.size() - 1);
+            }
+        }
+
+        cachedIcons = Collections.unmodifiableList(icons);
+    }
+
+    private static Image loadImage(String resourcePath) {
+        try {
+            URL url = AppIcon.class.getResource(resourcePath);
+            if (url != null) {
+                BufferedImage img = ImageIO.read(url);
+                if (img != null) {
+                    return img;
+                }
+            }
+            try (InputStream in = AppIcon.class.getResourceAsStream(resourcePath)) {
+                if (in != null) {
+                    return ImageIO.read(in);
+                }
+            }
+        } catch (Exception e) {
+            log.log(Level.FINE, "Failed to load icon from " + resourcePath, e);
+        }
+        return null;
+    }
+}

j3270/src/main/java/haus/nightmare/j3270/ui/ConnectDialog.java

@@ -1,16 +1,31 @@
 package haus.nightmare.j3270.ui;
 
+import haus.nightmare.j3270.storage.HostStorage;
+import haus.nightmare.j3270.storage.SavedHost;
 import haus.nightmare.lib3270j.ConnectionConfig;
 import haus.nightmare.lib3270j.TerminalModel;
 
 import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.TitledBorder;
 import java.awt.*;
+import java.util.List;
 
 /**
- * Connection dialog for entering host, port, model, and LU name.
+ * Connection dialog for entering host, port, model, LU name, and per-connection proxy configuration.
+ * Supports loading and saving host profiles matching the a3270 schema.
  */
 public class ConnectDialog extends JDialog {
 
+    private static final String NEW_PROFILE_LABEL = "<New / Custom Connection>";
+
+    // Profile selector
+    private JComboBox<Object> profileCombo;
+    private JButton saveProfileBtn;
+    private JButton deleteProfileBtn;
+    private String selectedProfileId = null;
+
+    // Connection parameters
     private JTextField hostField;
     private JTextField portField;
     private JComboBox<TerminalModel> modelCombo;
@@ -26,72 +41,131 @@ public class ConnectDialog extends JDialog {
     private JCheckBox tn3270eCheckBox;
     private JCheckBox keepAliveCheckBox;
     private JCheckBox autoReconnectCheckBox;
+
+    // Per-connection proxy configuration
+    private JComboBox<ConnectionConfig.ProxyType> proxyTypeCombo;
+    private JTextField proxyHostField;
+    private JTextField proxyPortField;
+    private JTextField proxyUserField;
+    private JPasswordField proxyPassField;
+
     private boolean confirmed;
     private ConnectionConfig result;
 
     public ConnectDialog(Frame parent) {
         super(parent, "Connect to Host", true);
+        AppIcon.applyTo(this);
         buildUI();
         pack();
         setLocationRelativeTo(parent);
-        setResizable(false);
+        setResizable(true);
     }
 
     private void buildUI() {
-        JPanel mainPanel = new JPanel(new GridBagLayout());
+        JPanel contentPanel = new JPanel(new GridBagLayout());
-        mainPanel.setBorder(BorderFactory.createEmptyBorder(16, 16, 16, 16));
+        contentPanel.setBorder(BorderFactory.createEmptyBorder(12, 14, 12, 14));
         GridBagConstraints gbc = new GridBagConstraints();
-        gbc.insets = new Insets(5, 6, 5, 6);
+        gbc.insets = new Insets(4, 5, 4, 5);
         gbc.fill = GridBagConstraints.HORIZONTAL;
 
-        Font labelFont = new Font(Font.SANS_SERIF, Font.PLAIN, 13);
+        Font labelFont = ThemeManager.getUiFont();
 
-        // Host
+        int gridy = 0;
+
+        // 0. Profile Row
         gbc.gridx = 0;
-        gbc.gridy = 0;
+        gbc.gridy = gridy;
+        gbc.weightx = 0;
+        JLabel profileLabel = new JLabel("Profile:");
+        profileLabel.setFont(labelFont);
+        contentPanel.add(profileLabel, gbc);
+
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        JPanel profileBar = new JPanel(new BorderLayout(6, 0));
+        profileBar.setOpaque(false);
+
+        profileCombo = new JComboBox<>();
+        profileCombo.setFont(ThemeManager.getUiFont());
+        ThemeManager.styleComboBox(profileCombo);
+        refreshProfileCombo();
+        profileCombo.addActionListener(e -> onProfileSelectionChanged());
+        profileBar.add(profileCombo, BorderLayout.CENTER);
+
+        JPanel profileBtnBar = new JPanel(new FlowLayout(FlowLayout.RIGHT, 4, 0));
+        profileBtnBar.setOpaque(false);
+
+        saveProfileBtn = new JButton("Save Profile...");
+        ThemeManager.styleButton(saveProfileBtn, ThemeManager.ButtonVariant.DEFAULT);
+        saveProfileBtn.setFont(labelFont);
+        saveProfileBtn.addActionListener(e -> onSaveProfile());
+
+        deleteProfileBtn = new JButton("Delete");
+        ThemeManager.styleButton(deleteProfileBtn, ThemeManager.ButtonVariant.CANCEL);
+        deleteProfileBtn.setFont(labelFont);
+        deleteProfileBtn.setEnabled(false);
+        deleteProfileBtn.addActionListener(e -> onDeleteProfile());
+
+        profileBtnBar.add(saveProfileBtn);
+        profileBtnBar.add(deleteProfileBtn);
+        profileBar.add(profileBtnBar, BorderLayout.EAST);
+        contentPanel.add(profileBar, gbc);
+
+        gridy++;
+
+        // 1. Host
+        gbc.gridx = 0;
+        gbc.gridy = gridy;
+        gbc.weightx = 0;
         JLabel hostLabel = new JLabel("Host:");
         hostLabel.setFont(labelFont);
-        mainPanel.add(hostLabel, gbc);
+        contentPanel.add(hostLabel, gbc);
         gbc.gridx = 1;
         gbc.weightx = 1.0;
         hostField = createField(20);
-        mainPanel.add(hostField, gbc);
+        contentPanel.add(hostField, gbc);
 
-        // Port
+        gridy++;
+
+        // 2. Port
         gbc.gridx = 0;
-        gbc.gridy = 1;
+        gbc.gridy = gridy;
         gbc.weightx = 0;
         JLabel portLabel = new JLabel("Port:");
         portLabel.setFont(labelFont);
-        mainPanel.add(portLabel, gbc);
+        contentPanel.add(portLabel, gbc);
         gbc.gridx = 1;
         gbc.weightx = 1.0;
         portField = createField(6);
         portField.setText("23");
-        mainPanel.add(portField, gbc);
+        contentPanel.add(portField, gbc);
 
-        // Model
+        gridy++;
+
+        // 3. Model
         gbc.gridx = 0;
-        gbc.gridy = 2;
+        gbc.gridy = gridy;
         gbc.weightx = 0;
         JLabel modelLabel = new JLabel("Model:");
         modelLabel.setFont(labelFont);
-        mainPanel.add(modelLabel, gbc);
+        contentPanel.add(modelLabel, gbc);
         gbc.gridx = 1;
         gbc.weightx = 1.0;
         modelCombo = new JComboBox<>(TerminalModel.values());
         modelCombo.setSelectedItem(TerminalModel.IBM_3279_4);
-        modelCombo.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
+        modelCombo.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleComboBox(modelCombo);
-        mainPanel.add(modelCombo, gbc);
+        contentPanel.add(modelCombo, gbc);
 
-        // Dynamic Dimensions (shown when IBM-DYNAMIC is selected)
+        gridy++;
+
+        // 4. Dynamic Dimensions
         gbc.gridx = 0;
-        gbc.gridy = 3;
+        gbc.gridy = gridy;
         gbc.weightx = 0;
         dynamicDimLabel = new JLabel("Screen Size:");
         dynamicDimLabel.setFont(labelFont);
-        mainPanel.add(dynamicDimLabel, gbc);
+        contentPanel.add(dynamicDimLabel, gbc);
 
         gbc.gridx = 1;
         gbc.weightx = 1.0;
@@ -112,7 +186,7 @@ public class ConnectDialog extends JDialog {
         dynamicDimPanel.add(dynamicRowsSpinner);
         dynamicDimPanel.add(colsLabel);
         dynamicDimPanel.add(dynamicColsSpinner);
-        mainPanel.add(dynamicDimPanel, gbc);
+        contentPanel.add(dynamicDimPanel, gbc);
 
         Runnable updateDynamicVisibility = () -> {
             TerminalModel m = (TerminalModel) modelCombo.getSelectedItem();
@@ -124,40 +198,64 @@ public class ConnectDialog extends JDialog {
         modelCombo.addActionListener(e -> updateDynamicVisibility.run());
         updateDynamicVisibility.run();
 
-        // LU Name
+        gridy++;
+
+        // 5. LU Name
         gbc.gridx = 0;
-        gbc.gridy = 4;
+        gbc.gridy = gridy;
         gbc.weightx = 0;
         JLabel luLabel = new JLabel("LU Name:");
         luLabel.setFont(labelFont);
-        mainPanel.add(luLabel, gbc);
+        contentPanel.add(luLabel, gbc);
         gbc.gridx = 1;
         gbc.weightx = 1.0;
         luField = createField(12);
-        mainPanel.add(luField, gbc);
+        contentPanel.add(luField, gbc);
 
-        // Graphics Mode
+        gridy++;
+
+        // 6. Graphics Mode
         gbc.gridx = 0;
-        gbc.gridy = 5;
+        gbc.gridy = gridy;
         gbc.weightx = 0;
         JLabel graphicsLabel = new JLabel("Graphics:");
         graphicsLabel.setFont(labelFont);
-        mainPanel.add(graphicsLabel, gbc);
+        contentPanel.add(graphicsLabel, gbc);
         gbc.gridx = 1;
         gbc.weightx = 1.0;
         graphicsCombo = new JComboBox<>(haus.nightmare.lib3270j.graphics.GraphicsMode.values());
         graphicsCombo.setSelectedItem(haus.nightmare.j3270.config.Settings.getGraphicsMode());
-        graphicsCombo.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
+        graphicsCombo.setFont(ThemeManager.getUiFont());
         ThemeManager.styleComboBox(graphicsCombo);
-        mainPanel.add(graphicsCombo, gbc);
+        graphicsCombo.setRenderer(new DefaultListCellRenderer() {
+            @Override
+            public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
+                super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
+                setBorder(new EmptyBorder(4, 8, 4, 8));
+                if (value instanceof haus.nightmare.lib3270j.graphics.GraphicsMode) {
+                    setText(((haus.nightmare.lib3270j.graphics.GraphicsMode) value).getDescription());
+                }
+                if (isSelected) {
+                    setBackground(ThemeManager.getSelectionBg());
+                    setForeground(ThemeManager.getSelectionFg());
+                } else {
+                    setBackground(ThemeManager.getBgComponent());
+                    setForeground(ThemeManager.getFgMain());
+                }
+                return this;
+            }
+        });
+        contentPanel.add(graphicsCombo, gbc);
 
-        // Code Page
+        gridy++;
+
+        // 7. Code Page
         gbc.gridx = 0;
-        gbc.gridy = 6;
+        gbc.gridy = gridy;
         gbc.weightx = 0;
         JLabel cpLabel = new JLabel("Code Page:");
         cpLabel.setFont(labelFont);
-        mainPanel.add(cpLabel, gbc);
+        contentPanel.add(cpLabel, gbc);
         gbc.gridx = 1;
         gbc.weightx = 1.0;
         String[] commonCodePages = {
@@ -178,43 +276,44 @@ public class ConnectDialog extends JDialog {
             "1155 - Turkey (Turkish Latin-5 Euro \u20AC)",
             "905 - Turkey (Turkish Latin-3)",
             "420 - Arabic Bilingual",
-            "424 - Hebrew (with Lowercase)",
+            "424 - Hebrew (with Latin)",
-            "803 - Hebrew Old / Standard",
+            "803 - Hebrew Character Set",
-            "838 - Thai",
+            "838 - Thai Extended",
-            "1160 - Thai (Euro \u20AC)",
+            "1160 - Thai Euro \u20AC",
             "1025 - Cyrillic Multilingual",
             "1123 - Cyrillic Ukraine",
-            "1154 - Cyrillic Multilingual (Euro \u20AC)",
+            "1154 - Cyrillic Euro \u20AC",
-            "880 - Cyrillic Russian",
+            "880 - Cyrillic (Russian)",
             "1140 - US / Canada (Euro \u20AC)",
             "1141 - Germany / Austria (Euro \u20AC)",
+            "1142 - Denmark / Norway (Euro \u20AC)",
+            "1143 - Sweden / Finland (Euro \u20AC)",
+            "1144 - Italy (Euro \u20AC)",
+            "1145 - Spain / Latin America (Euro \u20AC)",
+            "1146 - United Kingdom (Euro \u20AC)",
+            "1147 - France (Euro \u20AC)",
             "1148 - International (Euro \u20AC)",
+            "1149 - Iceland (Euro \u20AC)",
             "930 - Japanese Katakana Mixed DBCS",
             "939 - Japanese Latin Mixed DBCS",
             "935 - Simplified Chinese Mixed DBCS",
-            "1388 - Simplified Chinese Extended Mixed DBCS",
             "937 - Traditional Chinese Mixed DBCS",
-            "1371 - Traditional Chinese Extended Mixed DBCS",
+            "1388 - Simplified Chinese Extended DBCS",
+            "1371 - Traditional Chinese Extended DBCS",
             "933 - Korean Mixed DBCS"
         };
         codePageCombo = new JComboBox<>(commonCodePages);
-        codePageCombo.setEditable(true);
+        codePageCombo.setFont(ThemeManager.getMonospacedUiFont());
-        String currentCp = haus.nightmare.j3270.config.Settings.getCodePage();
-        for (String item : commonCodePages) {
-            if (item.startsWith(currentCp + " ") || item.equals(currentCp)) {
-                codePageCombo.setSelectedItem(item);
-                break;
-            }
-        }
-        codePageCombo.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
         ThemeManager.styleComboBox(codePageCombo);
-        mainPanel.add(codePageCombo, gbc);
+        setInitialCodePage(haus.nightmare.j3270.config.Settings.getCodePage());
+        contentPanel.add(codePageCombo, gbc);
 
-        // TLS / SSL Checkbox
+        gridy++;
+
+        // 8. TLS Checkbox
         gbc.gridx = 1;
-        gbc.gridy = 7;
+        gbc.gridy = gridy;
-        gbc.weightx = 1.0;
+        tlsCheckBox = new JCheckBox("Use TLS / SSL Encryption");
-        tlsCheckBox = new JCheckBox("Enable TLS/SSL");
         ThemeManager.styleCheckBox(tlsCheckBox);
         tlsCheckBox.setFont(labelFont);
         tlsCheckBox.addActionListener(e -> {
@@ -227,46 +326,169 @@ public class ConnectDialog extends JDialog {
                 portField.setText("23");
             }
         });
-        mainPanel.add(tlsCheckBox, gbc);
+        contentPanel.add(tlsCheckBox, gbc);
 
-        // Verify Certificate Checkbox
+        gridy++;
+
+        // 9. Verify Cert Checkbox
         gbc.gridx = 1;
-        gbc.gridy = 8;
+        gbc.gridy = gridy;
         verifyCertCheckBox = new JCheckBox("Verify Server Certificate");
         ThemeManager.styleCheckBox(verifyCertCheckBox);
-        verifyCertCheckBox.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
+        verifyCertCheckBox.setFont(ThemeManager.getUiFont());
         verifyCertCheckBox.setSelected(true);
         verifyCertCheckBox.setEnabled(false);
-        mainPanel.add(verifyCertCheckBox, gbc);
+        contentPanel.add(verifyCertCheckBox, gbc);
 
-        // TN3270E Checkbox
+        gridy++;
+
+        // 10. TN3270E Checkbox
         gbc.gridx = 1;
-        gbc.gridy = 9;
+        gbc.gridy = gridy;
         tn3270eCheckBox = new JCheckBox("Enable TN3270E (Extended 3270)");
         ThemeManager.styleCheckBox(tn3270eCheckBox);
-        tn3270eCheckBox.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
+        tn3270eCheckBox.setFont(ThemeManager.getUiFont());
         tn3270eCheckBox.setSelected(haus.nightmare.j3270.config.Settings.getAutoConnectTn3270e());
-        mainPanel.add(tn3270eCheckBox, gbc);
+        contentPanel.add(tn3270eCheckBox, gbc);
 
-        // Keep-Alive Checkbox
+        gridy++;
+
+        // 11. Keep-Alive Checkbox
         gbc.gridx = 1;
-        gbc.gridy = 10;
+        gbc.gridy = gridy;
         keepAliveCheckBox = new JCheckBox("Enable Keep-Alive Heartbeat (NOP)");
         ThemeManager.styleCheckBox(keepAliveCheckBox);
-        keepAliveCheckBox.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
+        keepAliveCheckBox.setFont(ThemeManager.getUiFont());
         keepAliveCheckBox.setSelected(haus.nightmare.j3270.config.Settings.getAutoConnectKeepAlive());
-        mainPanel.add(keepAliveCheckBox, gbc);
+        contentPanel.add(keepAliveCheckBox, gbc);
 
-        // Auto-Reconnect Checkbox
+        gridy++;
+
+        // 12. Auto-Reconnect Checkbox
         gbc.gridx = 1;
-        gbc.gridy = 11;
+        gbc.gridy = gridy;
         autoReconnectCheckBox = new JCheckBox("Auto-Reconnect on Disconnect");
         ThemeManager.styleCheckBox(autoReconnectCheckBox);
-        autoReconnectCheckBox.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
+        autoReconnectCheckBox.setFont(ThemeManager.getUiFont());
         autoReconnectCheckBox.setSelected(haus.nightmare.j3270.config.Settings.getAutoConnectAutoReconnect());
-        mainPanel.add(autoReconnectCheckBox, gbc);
+        contentPanel.add(autoReconnectCheckBox, gbc);
+
+        gridy++;
+
+        // 13. PER-CONNECTION PROXY CONFIGURATION PANEL
+        gbc.gridx = 0;
+        gbc.gridy = gridy;
+        gbc.gridwidth = 2;
+        gbc.weightx = 1.0;
+
+        JPanel proxyGroup = new JPanel(new GridBagLayout());
+        proxyGroup.setBorder(BorderFactory.createTitledBorder(
+                BorderFactory.createEtchedBorder(),
+                "Proxy Configuration (This Connection)",
+                TitledBorder.LEFT,
+                TitledBorder.TOP,
+                labelFont
+        ));
+        GridBagConstraints pgbc = new GridBagConstraints();
+        pgbc.insets = new Insets(3, 6, 3, 6);
+        pgbc.fill = GridBagConstraints.HORIZONTAL;
+
+        // Proxy Type
+        pgbc.gridx = 0;
+        pgbc.gridy = 0;
+        pgbc.weightx = 0;
+        JLabel ptLabel = new JLabel("Proxy Type:");
+        ptLabel.setFont(labelFont);
+        proxyGroup.add(ptLabel, pgbc);
+
+        pgbc.gridx = 1;
+        pgbc.gridwidth = 3;
+        pgbc.weightx = 1.0;
+        proxyTypeCombo = new JComboBox<>(ConnectionConfig.ProxyType.values());
+        proxyTypeCombo.setSelectedItem(ConnectionConfig.ProxyType.NONE);
+        proxyTypeCombo.setFont(ThemeManager.getUiFont());
+        ThemeManager.styleComboBox(proxyTypeCombo);
+        proxyGroup.add(proxyTypeCombo, pgbc);
+
+        // Proxy Host & Port
+        pgbc.gridx = 0;
+        pgbc.gridy = 1;
+        pgbc.gridwidth = 1;
+        pgbc.weightx = 0;
+        JLabel phLabel = new JLabel("Proxy Host:");
+        phLabel.setFont(labelFont);
+        proxyGroup.add(phLabel, pgbc);
+
+        pgbc.gridx = 1;
+        pgbc.weightx = 1.0;
+        proxyHostField = createField(14);
+        proxyGroup.add(proxyHostField, pgbc);
+
+        pgbc.gridx = 2;
+        pgbc.weightx = 0;
+        JLabel ppLabel = new JLabel("Port:");
+        ppLabel.setFont(labelFont);
+        proxyGroup.add(ppLabel, pgbc);
+
+        pgbc.gridx = 3;
+        pgbc.weightx = 0.4;
+        proxyPortField = createField(5);
+        proxyGroup.add(proxyPortField, pgbc);
+
+        // Proxy User & Password
+        pgbc.gridx = 0;
+        pgbc.gridy = 2;
+        pgbc.gridwidth = 1;
+        pgbc.weightx = 0;
+        JLabel puLabel = new JLabel("Username:");
+        puLabel.setFont(labelFont);
+        proxyGroup.add(puLabel, pgbc);
+
+        pgbc.gridx = 1;
+        pgbc.weightx = 1.0;
+        proxyUserField = createField(12);
+        proxyGroup.add(proxyUserField, pgbc);
+
+        pgbc.gridx = 2;
+        pgbc.weightx = 0;
+        JLabel pwLabel = new JLabel("Password:");
+        pwLabel.setFont(labelFont);
+        proxyGroup.add(pwLabel, pgbc);
+
+        pgbc.gridx = 3;
+        pgbc.weightx = 0.4;
+        proxyPassField = createPasswordField(10);
+        proxyGroup.add(proxyPassField, pgbc);
+
+        // Dynamic enable/disable based on Proxy Type
+        Runnable updateProxyFields = () -> {
+            ConnectionConfig.ProxyType pt = (ConnectionConfig.ProxyType) proxyTypeCombo.getSelectedItem();
+            boolean active = (pt != null && pt != ConnectionConfig.ProxyType.NONE);
+            proxyHostField.setEnabled(active);
+            proxyPortField.setEnabled(active);
+            proxyUserField.setEnabled(active);
+            proxyPassField.setEnabled(active && pt != ConnectionConfig.ProxyType.SOCKS4);
+
+            if (active) {
+                String currentPPort = proxyPortField.getText().trim();
+                if (currentPPort.isEmpty() || "0".equals(currentPPort)) {
+                    proxyPortField.setText(pt == ConnectionConfig.ProxyType.HTTP ? "8080" : "1080");
+                }
+            }
+        };
+        proxyTypeCombo.addActionListener(e -> updateProxyFields.run());
+        updateProxyFields.run();
+
+        contentPanel.add(proxyGroup, gbc);
+
+        gridy++;
+
+        // 14. Action Buttons
+        gbc.gridx = 0;
+        gbc.gridy = gridy;
+        gbc.gridwidth = 2;
+        gbc.weightx = 1.0;
 
-        // Buttons
         JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 8, 4));
 
         JButton connectBtn = new JButton("Connect");
@@ -284,13 +506,14 @@ public class ConnectDialog extends JDialog {
 
         buttonPanel.add(cancelBtn);
         buttonPanel.add(connectBtn);
+        contentPanel.add(buttonPanel, gbc);
 
-        gbc.gridx = 0;
+        JScrollPane scrollPane = new JScrollPane(contentPanel);
-        gbc.gridy = 12;
+        scrollPane.setBorder(BorderFactory.createEmptyBorder());
-        gbc.gridwidth = 2;
+        scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
-        mainPanel.add(buttonPanel, gbc);
+        scrollPane.getVerticalScrollBar().setUnitIncrement(14);
+        setContentPane(scrollPane);
 
-        setContentPane(mainPanel);
         ThemeManager.applyThemeToWindow(this);
 
         // Enter key triggers connect
@@ -299,11 +522,194 @@ public class ConnectDialog extends JDialog {
 
     private JTextField createField(int cols) {
         JTextField field = new JTextField(cols);
-        field.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 14));
+        field.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleTextField(field);
         return field;
     }
 
+    private JPasswordField createPasswordField(int cols) {
+        JPasswordField field = new JPasswordField(cols);
+        field.setFont(ThemeManager.getMonospacedUiFont());
+        ThemeManager.styleTextField(field);
+        return field;
+    }
+
+    // ================= Profile Management =================
+
+    private void refreshProfileCombo() {
+        profileCombo.removeAllItems();
+        profileCombo.addItem(NEW_PROFILE_LABEL);
+        List<SavedHost> saved = HostStorage.getSavedHosts();
+        for (SavedHost h : saved) {
+            profileCombo.addItem(h);
+        }
+        if (selectedProfileId != null) {
+            for (int i = 0; i < profileCombo.getItemCount(); i++) {
+                Object item = profileCombo.getItemAt(i);
+                if (item instanceof SavedHost && ((SavedHost) item).getId().equals(selectedProfileId)) {
+                    profileCombo.setSelectedIndex(i);
+                    return;
+                }
+            }
+        }
+        profileCombo.setSelectedIndex(0);
+    }
+
+    private void onProfileSelectionChanged() {
+        Object sel = profileCombo.getSelectedItem();
+        if (sel instanceof SavedHost) {
+            SavedHost h = (SavedHost) sel;
+            selectedProfileId = h.getId();
+            deleteProfileBtn.setEnabled(true);
+            loadProfileFields(h);
+        } else {
+            selectedProfileId = null;
+            deleteProfileBtn.setEnabled(false);
+        }
+    }
+
+    public void loadProfile(SavedHost h) {
+        if (h == null) return;
+        selectedProfileId = h.getId();
+        refreshProfileCombo();
+        loadProfileFields(h);
+    }
+
+    private void loadProfileFields(SavedHost h) {
+        if (h == null) return;
+        hostField.setText(h.getHost());
+        portField.setText(String.valueOf(h.getPort()));
+        if (h.getModel() == 0) {
+            modelCombo.setSelectedItem(TerminalModel.IBM_DYNAMIC);
+        } else {
+            try {
+                modelCombo.setSelectedItem(TerminalModel.forModel(h.getModel(), true));
+            } catch (Exception ignored) {
+            }
+        }
+        dynamicRowsSpinner.setValue(h.getDynamicRows() > 0 ? h.getDynamicRows() : 62);
+        dynamicColsSpinner.setValue(h.getDynamicCols() > 0 ? h.getDynamicCols() : 160);
+        luField.setText(h.getLuName() != null ? h.getLuName() : "");
+        tlsCheckBox.setSelected(h.isUseTls());
+        verifyCertCheckBox.setEnabled(h.isUseTls());
+        verifyCertCheckBox.setSelected(h.isTlsVerifyCert());
+        tn3270eCheckBox.setSelected(h.isTn3270e());
+        setInitialCodePage(h.getCodePage());
+
+        if (h.getGraphicsMode() != null) {
+            graphicsCombo.setSelectedItem(haus.nightmare.lib3270j.graphics.GraphicsMode.fromString(h.getGraphicsMode()));
+        }
+
+        // Per-connection proxy parameters
+        String ptStr = h.getProxyType();
+        try {
+            ConnectionConfig.ProxyType pt = (ptStr != null && !ptStr.trim().isEmpty())
+                    ? ConnectionConfig.ProxyType.valueOf(ptStr.toUpperCase())
+                    : ConnectionConfig.ProxyType.NONE;
+            proxyTypeCombo.setSelectedItem(pt);
+        } catch (IllegalArgumentException e) {
+            proxyTypeCombo.setSelectedItem(ConnectionConfig.ProxyType.NONE);
+        }
+        proxyHostField.setText(h.getProxyHost() != null ? h.getProxyHost() : "");
+        proxyPortField.setText(h.getProxyPort() > 0 ? String.valueOf(h.getProxyPort()) : "");
+        proxyUserField.setText(h.getProxyUsername() != null ? h.getProxyUsername() : "");
+        proxyPassField.setText(h.getProxyPassword() != null ? h.getProxyPassword() : "");
+    }
+
+    private void onSaveProfile() {
+        String hStr = hostField.getText().trim();
+        if (hStr.isEmpty()) {
+            hostField.requestFocus();
+            JOptionPane.showMessageDialog(this, "Please specify a host before saving profile.", "Missing Host", JOptionPane.WARNING_MESSAGE);
+            return;
+        }
+
+        String defaultName = hStr;
+        Object currentSel = profileCombo.getSelectedItem();
+        if (currentSel instanceof SavedHost) {
+            defaultName = ((SavedHost) currentSel).getName();
+        }
+
+        String profileName = (String) JOptionPane.showInputDialog(
+                this,
+                "Enter Host Profile Name:",
+                "Save Profile",
+                JOptionPane.PLAIN_MESSAGE,
+                null,
+                null,
+                defaultName
+        );
+
+        if (profileName == null || profileName.trim().isEmpty()) {
+            return;
+        }
+        profileName = profileName.trim();
+
+        SavedHost hostToSave = buildCurrentSavedHost(profileName);
+        HostStorage.saveHost(hostToSave);
+        selectedProfileId = hostToSave.getId();
+        refreshProfileCombo();
+    }
+
+    private void onDeleteProfile() {
+        if (selectedProfileId == null) return;
+        int opt = JOptionPane.showConfirmDialog(this,
+                "Are you sure you want to delete this host profile?",
+                "Delete Profile",
+                JOptionPane.YES_NO_OPTION);
+        if (opt == JOptionPane.YES_OPTION) {
+            HostStorage.deleteHost(selectedProfileId);
+            selectedProfileId = null;
+            refreshProfileCombo();
+        }
+    }
+
+    private SavedHost buildCurrentSavedHost(String profileName) {
+        String id = selectedProfileId != null ? selectedProfileId : java.util.UUID.randomUUID().toString();
+        String h = hostField.getText().trim();
+        int port = 23;
+        try {
+            port = Integer.parseInt(portField.getText().trim());
+        } catch (NumberFormatException ignored) {}
+
+        TerminalModel m = (TerminalModel) modelCombo.getSelectedItem();
+        int mNum = (m != null) ? m.getModelNumber() : 4;
+        int dRows = (Integer) dynamicRowsSpinner.getValue();
+        int dCols = (Integer) dynamicColsSpinner.getValue();
+        String lu = luField.getText().trim();
+        boolean tls = tlsCheckBox.isSelected();
+        boolean verify = verifyCertCheckBox.isSelected();
+        boolean tn3270e = tn3270eCheckBox.isSelected();
+
+        String gfx = "BOTH";
+        if (graphicsCombo.getSelectedItem() != null) {
+            gfx = ((haus.nightmare.lib3270j.graphics.GraphicsMode) graphicsCombo.getSelectedItem()).name();
+        }
+
+        String cp = "037";
+        Object cpSel = codePageCombo.getSelectedItem();
+        if (cpSel != null) {
+            String s = cpSel.toString().trim();
+            int dash = s.indexOf(" -");
+            cp = (dash > 0) ? s.substring(0, dash).trim() : s;
+        }
+
+        ConnectionConfig.ProxyType pt = (ConnectionConfig.ProxyType) proxyTypeCombo.getSelectedItem();
+        String ptStr = (pt != null) ? pt.name() : "NONE";
+        String pHost = proxyHostField.getText().trim();
+        int pPort = 0;
+        try {
+            pPort = Integer.parseInt(proxyPortField.getText().trim());
+        } catch (NumberFormatException ignored) {}
+        String pUser = proxyUserField.getText().trim();
+        String pPass = new String(proxyPassField.getPassword());
+
+        return new SavedHost(id, profileName, h, port, mNum, dRows, dCols, lu, false,
+                "TSO", tls, verify, tn3270e, gfx, cp, ptStr, pHost, pPort, pUser, pPass);
+    }
+
+    // ================= Connect Action =================
+
     private void onConnect() {
         String host = hostField.getText().trim();
         if (host.isEmpty()) {
@@ -320,19 +726,34 @@ public class ConnectDialog extends JDialog {
         }
 
         TerminalModel selectedModel = (TerminalModel) modelCombo.getSelectedItem();
+        if (selectedModel == null) {
+            selectedModel = TerminalModel.IBM_3279_4;
+        }
+
+        // Support full host string parsing if the user pasted flags or prefixes into host field
+        if (host.contains(" ") || host.startsWith("L:") || host.startsWith("P:") || host.startsWith("--proxy=") || host.startsWith("-proxy=")) {
+            result = ConnectionConfig.parseHostString(host, port, selectedModel);
+        } else {
             result = new ConnectionConfig(host, port, selectedModel);
-        if (selectedModel != null && selectedModel.isDynamic()) {
+        }
+
+        if (selectedModel.isDynamic()) {
             int dRows = (Integer) dynamicRowsSpinner.getValue();
             int dCols = (Integer) dynamicColsSpinner.getValue();
             result.setDynamicDimensions(dRows, dCols);
             haus.nightmare.j3270.config.Settings.setDynamicRows(dRows);
             haus.nightmare.j3270.config.Settings.setDynamicCols(dCols);
         }
+
         String lu = luField.getText().trim();
         if (!lu.isEmpty()) {
             result.setLuName(lu);
         }
-        result.setGraphicsMode((haus.nightmare.lib3270j.graphics.GraphicsMode) graphicsCombo.getSelectedItem());
+        if (graphicsCombo.getSelectedItem() != null) {
+            haus.nightmare.lib3270j.graphics.GraphicsMode gm = (haus.nightmare.lib3270j.graphics.GraphicsMode) graphicsCombo.getSelectedItem();
+            result.setGraphicsMode(gm);
+            haus.nightmare.j3270.config.Settings.setGraphicsMode(gm);
+        }
 
         Object cpSelection = codePageCombo.getSelectedItem();
         if (cpSelection != null) {
@@ -360,6 +781,30 @@ public class ConnectDialog extends JDialog {
         result.setReconnectMaxRetries(haus.nightmare.j3270.config.Settings.getAutoConnectReconnectMaxRetries());
         haus.nightmare.j3270.config.Settings.setAutoConnectAutoReconnect(ar);
 
+        // Apply per-connection proxy parameters strictly to this connection
+        ConnectionConfig.ProxyType pType = (ConnectionConfig.ProxyType) proxyTypeCombo.getSelectedItem();
+        String pHost = proxyHostField.getText().trim();
+        if (pType != null && pType != ConnectionConfig.ProxyType.NONE && !pHost.isEmpty()) {
+            int pPort = 0;
+            try {
+                pPort = Integer.parseInt(proxyPortField.getText().trim());
+            } catch (NumberFormatException ignored) {}
+            if (pPort <= 0) {
+                pPort = (pType == ConnectionConfig.ProxyType.HTTP) ? 8080 : 1080;
+            }
+            String pUser = proxyUserField.getText().trim();
+            String pPass = new String(proxyPassField.getPassword());
+            result.setProxy(pType, pHost, pPort, pUser.isEmpty() ? null : pUser, pPass.isEmpty() ? null : pPass);
+        }
+
+        if (selectedProfileId != null) {
+            SavedHost existing = HostStorage.findById(selectedProfileId);
+            String pName = (existing != null && existing.getName() != null && !existing.getName().trim().isEmpty())
+                    ? existing.getName() : host;
+            SavedHost updated = buildCurrentSavedHost(pName);
+            HostStorage.saveHost(updated);
+        }
+
         confirmed = true;
         dispose();
     }
@@ -394,6 +839,12 @@ public class ConnectDialog extends JDialog {
         tn3270eCheckBox.setSelected(tn3270e);
     }
 
+    public void setInitialGraphicsMode(haus.nightmare.lib3270j.graphics.GraphicsMode mode) {
+        if (mode != null && selectedProfileId == null && graphicsCombo != null) {
+            graphicsCombo.setSelectedItem(mode);
+        }
+    }
+
     public void setInitialCodePage(String cp) {
         if (cp != null && codePageCombo != null) {
             for (int i = 0; i < codePageCombo.getItemCount(); i++) {
@@ -406,4 +857,49 @@ public class ConnectDialog extends JDialog {
             codePageCombo.setSelectedItem(cp);
         }
     }
+
+    /**
+     * Set initial proxy settings for this connection.
+     */
+    public void setInitialProxy(ConnectionConfig.ProxyType type, String host, int port, String user, String pass) {
+        if (proxyTypeCombo != null) {
+            proxyTypeCombo.setSelectedItem(type != null ? type : ConnectionConfig.ProxyType.NONE);
+        }
+        if (proxyHostField != null) {
+            proxyHostField.setText(host != null ? host : "");
+        }
+        if (proxyPortField != null) {
+            proxyPortField.setText(port > 0 ? String.valueOf(port) : "");
+        }
+        if (proxyUserField != null) {
+            proxyUserField.setText(user != null ? user : "");
+        }
+        if (proxyPassField != null) {
+            proxyPassField.setText(pass != null ? pass : "");
+        }
+    }
+
+    public ConnectionConfig.ProxyType getSelectedProxyType() {
+        return (ConnectionConfig.ProxyType) proxyTypeCombo.getSelectedItem();
+    }
+
+    public String getProxyHost() {
+        return proxyHostField.getText().trim();
+    }
+
+    public int getProxyPort() {
+        try {
+            return Integer.parseInt(proxyPortField.getText().trim());
+        } catch (Exception e) {
+            return 0;
+        }
+    }
+
+    public String getProxyUsername() {
+        return proxyUserField.getText().trim();
+    }
+
+    public String getProxyPassword() {
+        return new String(proxyPassField.getPassword());
+    }
 }

j3270/src/main/java/haus/nightmare/j3270/ui/FieldInspectorDialog.java

@@ -32,6 +32,7 @@ public class FieldInspectorDialog extends JDialog implements ScreenUpdateListene
         super(parent, "3270 Presentation Space Field Inspector", false);
         this.client = client;
         this.terminalPanel = terminalPanel;
+        AppIcon.applyTo(this);
 
         buildUI();
         setSize(850, 420);
@@ -60,7 +61,7 @@ public class FieldInspectorDialog extends JDialog implements ScreenUpdateListene
         JPanel topPanel = new JPanel(new BorderLayout());
         topPanel.setOpaque(false);
         countLabel = new JLabel("0 fields detected on screen");
-        countLabel.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 13));
+        countLabel.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
         topPanel.add(countLabel, BorderLayout.WEST);
 
         JButton refreshBtn = new JButton("Refresh");
@@ -83,12 +84,12 @@ public class FieldInspectorDialog extends JDialog implements ScreenUpdateListene
 
         table = new JTable(tableModel);
         ThemeManager.styleTable(table);
-        table.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
+        table.setFont(ThemeManager.getMonospacedUiFont());
         table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
-        table.setRowHeight(20);
+        table.setRowHeight(Math.max(22, ThemeManager.getMonospacedUiFont().getSize() + 8));
 
         JTableHeader header = table.getTableHeader();
-        header.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 12));
+        header.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
 
         // Column widths
         int[] widths = {35, 45, 60, 60, 40, 45, 45, 45, 50, 55, 60, 260};

j3270/src/main/java/haus/nightmare/j3270/ui/FindDialog.java

@@ -32,6 +32,7 @@ public class FindDialog extends JDialog {
         super(parent, "Find on Screen", false);
         this.client = client;
         this.terminalPanel = terminalPanel;
+        AppIcon.applyTo(this);
 
         buildUI();
         pack();
@@ -50,7 +51,7 @@ public class FindDialog extends JDialog {
         gbc.insets = new Insets(4, 4, 4, 4);
         gbc.fill = GridBagConstraints.HORIZONTAL;
 
-        Font labelFont = new Font(Font.SANS_SERIF, Font.PLAIN, 13);
+        Font labelFont = ThemeManager.getUiFont();
 
         // Search text
         gbc.gridx = 0;
@@ -63,7 +64,7 @@ public class FindDialog extends JDialog {
         gbc.weightx = 1.0;
         searchField = new JTextField(20);
         searchField.setText(lastSearchText);
-        searchField.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
+        searchField.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleTextField(searchField);
         formPanel.add(searchField, gbc);
 
@@ -102,7 +103,7 @@ public class FindDialog extends JDialog {
         gbc.gridwidth = 2;
         statusLabel = new JLabel(" ");
         statusLabel.setForeground(ThemeManager.getOiaFgAlert());
-        statusLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
+        statusLabel.setFont(labelFont);
         formPanel.add(statusLabel, gbc);
 
         mainPanel.add(formPanel, BorderLayout.CENTER);

j3270/src/main/java/haus/nightmare/j3270/ui/HostDirectoryDialog.java

@@ -40,6 +40,7 @@ public class HostDirectoryDialog extends JDialog {
         super(parent, "Host Catalog & Directory Browser", true);
         this.client = client;
         this.initialHostType = hostType;
+        AppIcon.applyTo(this);
 
         buildUI(initialQuery);
         setSize(700, 420);
@@ -50,7 +51,7 @@ public class HostDirectoryDialog extends JDialog {
         JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
         mainPanel.setBorder(new EmptyBorder(12, 12, 12, 12));
 
-        Font font = new Font(Font.SANS_SERIF, Font.PLAIN, 13);
+        Font font = ThemeManager.getUiFont();
 
         // Top Query bar
         JPanel topPanel = new JPanel(new GridBagLayout());
@@ -78,7 +79,7 @@ public class HostDirectoryDialog extends JDialog {
         gbc.gridx = 3;
         gbc.weightx = 1.0;
         queryField = new JTextField(initialQuery != null ? initialQuery : "", 16);
-        queryField.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
+        queryField.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleTextField(queryField);
         topPanel.add(queryField, gbc);
 
@@ -96,12 +97,12 @@ public class HostDirectoryDialog extends JDialog {
         tableModel = new DefaultTableModel();
         table = new JTable(tableModel);
         ThemeManager.styleTable(table);
-        table.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
+        table.setFont(ThemeManager.getMonospacedUiFont());
         table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
-        table.setRowHeight(20);
+        table.setRowHeight(Math.max(22, ThemeManager.getMonospacedUiFont().getSize() + 8));
 
         JTableHeader header = table.getTableHeader();
-        header.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 12));
+        header.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
 
         table.addMouseListener(new MouseAdapter() {
             @Override
@@ -122,7 +123,7 @@ public class HostDirectoryDialog extends JDialog {
 
         statusLabel = new JLabel("Enter a dataset pattern or parse active screen.");
         statusLabel.setForeground(ThemeManager.getFgMuted());
-        statusLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
+        statusLabel.setFont(font);
         bottomPanel.add(statusLabel, BorderLayout.WEST);
 
         JPanel btnPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));

j3270/src/main/java/haus/nightmare/j3270/ui/HotspotEngine.java

@@ -0,0 +1,391 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.screen.ExtendedAttribute;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Real-time hotspot and URL auto-detection engine matching IBM Host On-Demand
+ * ShowURLOptions and ScreenText parity.
+ *
+ * Scans screen text using regular expressions for:
+ * 1. URLs (http://, https://, ftp://, file://, mailto:, www.)
+ * 2. Function keys (PF1..PF24, F1..F24, PA1..PA3, [ENTER], ENTER)
+ * 3. Menu choices ("1.", "2.", "===> 3", "=> 4")
+ *
+ * Provides hit-testing for mouse hover/clicks and generates keystroke actions.
+ */
+public class HotspotEngine {
+
+    public enum HotspotType {
+        URL,
+        PF_KEY,
+        ENTER,
+        MENU_CHOICE
+    }
+
+    /**
+     * Represents an active interactive hotspot region on the terminal screen.
+     */
+    public static class Hotspot {
+        private final HotspotType type;
+        private final int startRow;
+        private final int startCol;
+        private final int endRow;
+        private final int endCol;
+        private final String displayText;
+        private final String action;
+        private final String tooltip;
+
+        public Hotspot(HotspotType type, int startRow, int startCol, int endRow, int endCol,
+                       String displayText, String action, String tooltip) {
+            this.type = type;
+            this.startRow = startRow;
+            this.startCol = startCol;
+            this.endRow = endRow;
+            this.endCol = endCol;
+            this.displayText = displayText;
+            this.action = action;
+            this.tooltip = tooltip;
+        }
+
+        public HotspotType getType() {
+            return type;
+        }
+
+        public int getStartRow() {
+            return startRow;
+        }
+
+        public int getStartCol() {
+            return startCol;
+        }
+
+        public int getEndRow() {
+            return endRow;
+        }
+
+        public int getEndCol() {
+            return endCol;
+        }
+
+        public String getDisplayText() {
+            return displayText;
+        }
+
+        public String getAction() {
+            return action;
+        }
+
+        public String getTooltip() {
+            return tooltip;
+        }
+
+        /**
+         * Test whether the given row/col coordinate falls within this hotspot.
+         */
+        public boolean contains(int row, int col) {
+            if (row < startRow || row > endRow) {
+                return false;
+            }
+            if (startRow == endRow) {
+                return col >= startCol && col <= endCol;
+            }
+            if (row == startRow) {
+                return col >= startCol;
+            }
+            if (row == endRow) {
+                return col <= endCol;
+            }
+            return true; // Intermediate rows
+        }
+
+        @Override
+        public String toString() {
+            return "Hotspot{" + type + " [" + startRow + "," + startCol + "]-[" + endRow + "," + endCol + "] '" + displayText + "'}";
+        }
+    }
+
+    // Configurable scan enablement
+    private boolean urlEnabled = true;
+    private boolean pfKeyEnabled = true;
+    private boolean menuChoiceEnabled = true;
+
+    // Regular expression patterns
+    // 1. URLs
+    private static final Pattern URL_PATTERN = Pattern.compile(
+            "(?:https?|ftp|file)://[\\w\\-._~:/?#\\[\\]@!$&'*+,;=%]+|www\\.[\\w\\-._~:/?#\\[\\]@!$&'*+,;=%]+|mailto:[\\w\\-._~:/?#\\[\\]@!$&'*+,;=%]+",
+            Pattern.CASE_INSENSITIVE
+    );
+
+    // 2. Function keys (PF1..PF24, F1..F24, PA1..PA3, [ENTER], ENTER)
+    private static final Pattern PF_KEY_PATTERN = Pattern.compile(
+            "(?:(?<=\\W)|^)(PF(?:[1-9]|1[0-9]|2[0-4])|F(?:[1-9]|1[0-9]|2[0-4])|PA[1-3]|\\[ENTER\\]|ENTER)(?:(?=\\W)|$)",
+            Pattern.CASE_INSENSITIVE
+    );
+
+    // 3. Menu choices: "1.", "2.", "===> 3", "=> 4", "--> 5"
+    private static final Pattern MENU_NUMBER_PATTERN = Pattern.compile(
+            "(?:(?<=\\s)|^)(\\d{1,2})\\.(?:(?=\\s)|$)"
+    );
+
+    private static final Pattern MENU_PROMPT_PATTERN = Pattern.compile(
+            "(?:===>|=>|-->)\\s*(\\d{1,2})(?:(?=\\s)|$)"
+    );
+
+    // Caching state to avoid rescanning unchanged screens
+    private String cachedScreenText = "";
+    private int cachedRows = 0;
+    private int cachedCols = 0;
+    private List<Hotspot> cachedHotspots = Collections.emptyList();
+
+    public HotspotEngine() {
+    }
+
+    public boolean isUrlEnabled() {
+        return urlEnabled;
+    }
+
+    public void setUrlEnabled(boolean urlEnabled) {
+        this.urlEnabled = urlEnabled;
+        invalidateCache();
+    }
+
+    public boolean isPfKeyEnabled() {
+        return pfKeyEnabled;
+    }
+
+    public void setPfKeyEnabled(boolean pfKeyEnabled) {
+        this.pfKeyEnabled = pfKeyEnabled;
+        invalidateCache();
+    }
+
+    public boolean isMenuChoiceEnabled() {
+        return menuChoiceEnabled;
+    }
+
+    public void setMenuChoiceEnabled(boolean menuChoiceEnabled) {
+        this.menuChoiceEnabled = menuChoiceEnabled;
+        invalidateCache();
+    }
+
+    public void invalidateCache() {
+        cachedScreenText = "";
+        cachedHotspots = Collections.emptyList();
+    }
+
+    /**
+     * Scan the given ScreenBuffer for interactive hotspots.
+     */
+    public synchronized List<Hotspot> scan(ScreenBuffer sb) {
+        if (sb == null) return Collections.emptyList();
+        int rows = sb.getDisplayRows();
+        int cols = sb.getDisplayCols();
+
+        // Build plain text representation
+        StringBuilder fullText = new StringBuilder(rows * (cols + 1));
+        for (int r = 0; r < rows; r++) {
+            for (int c = 0; c < cols; c++) {
+                int baddr = r * cols + c;
+                ExtendedAttribute ea = sb.getDisplayCell(baddr);
+                if (ea == null || ea.isFieldAttribute() || ea.ucs4 <= 0x20 || ea.ucs4 == 0xFF) {
+                    fullText.append(' ');
+                } else {
+                    fullText.append((char) ea.ucs4);
+                }
+            }
+            if (r < rows - 1) {
+                fullText.append('\n');
+            }
+        }
+
+        return scanText(fullText.toString(), rows, cols);
+    }
+
+    /**
+     * Scan formatted screen text (lines separated by '\n') for hotspots.
+     */
+    public synchronized List<Hotspot> scanText(String screenText, int rows, int cols) {
+        if (screenText == null || rows <= 0 || cols <= 0) {
+            return Collections.emptyList();
+        }
+
+        if (screenText.equals(cachedScreenText) && rows == cachedRows && cols == cachedCols) {
+            return cachedHotspots;
+        }
+
+        List<Hotspot> hotspots = new ArrayList<>();
+        String[] lines = screenText.split("\n", -1);
+        int actualRows = Math.min(rows, lines.length);
+
+        // Scan line by line for precise row/column tracking
+        for (int r = 0; r < actualRows; r++) {
+            String line = lines[r];
+            boolean[] occupied = new boolean[line.length() + 1];
+
+            // 1. Scan URLs
+            if (urlEnabled) {
+                Matcher mUrl = URL_PATTERN.matcher(line);
+                while (mUrl.find()) {
+                    int startCol = mUrl.start();
+                    int endCol = mUrl.end();
+                    String match = mUrl.group();
+
+                    // Trim trailing punctuation like . , ; : ) ]
+                    while (match.length() > 1) {
+                        char last = match.charAt(match.length() - 1);
+                        if (last == '.' || last == ',' || last == ';' || last == ':' || last == ')' || last == ']' || last == '>') {
+                            match = match.substring(0, match.length() - 1);
+                            endCol--;
+                        } else {
+                            break;
+                        }
+                    }
+
+                    if (match.isEmpty()) continue;
+
+                    String actionUrl = match;
+                    if (match.toLowerCase().startsWith("www.")) {
+                        actionUrl = "http://" + match;
+                    }
+
+                    Hotspot h = new Hotspot(
+                            HotspotType.URL,
+                            r, startCol, r, endCol - 1,
+                            match, actionUrl, "Open URL: " + actionUrl
+                    );
+                    hotspots.add(h);
+                    markOccupied(occupied, startCol, endCol);
+                }
+            }
+
+            // 2. Scan PF / Function keys
+            if (pfKeyEnabled) {
+                Matcher mPf = PF_KEY_PATTERN.matcher(line);
+                while (mPf.find()) {
+                    int startCol = mPf.start(1);
+                    int endCol = mPf.end(1);
+                    if (isRangeOccupied(occupied, startCol, endCol)) continue;
+
+                    String keyText = mPf.group(1).toUpperCase();
+                    String action;
+                    String tooltip;
+
+                    if (keyText.equals("ENTER") || keyText.equals("[ENTER]")) {
+                        action = "[enter]";
+                        tooltip = "Send [ENTER]";
+                    } else if (keyText.startsWith("PF")) {
+                        String numStr = keyText.substring(2);
+                        action = "[pf" + numStr + "]";
+                        tooltip = "Send " + action.toUpperCase();
+                    } else if (keyText.startsWith("F")) {
+                        String numStr = keyText.substring(1);
+                        action = "[pf" + numStr + "]";
+                        tooltip = "Send " + action.toUpperCase();
+                    } else if (keyText.startsWith("PA")) {
+                        String numStr = keyText.substring(2);
+                        action = "[pa" + numStr + "]";
+                        tooltip = "Send " + action.toUpperCase();
+                    } else {
+                        continue;
+                    }
+
+                    Hotspot h = new Hotspot(
+                            keyText.contains("ENTER") ? HotspotType.ENTER : HotspotType.PF_KEY,
+                            r, startCol, r, endCol - 1,
+                            mPf.group(1), action, tooltip
+                    );
+                    hotspots.add(h);
+                    markOccupied(occupied, startCol, endCol);
+                }
+            }
+
+            // 3. Scan Menu choices ("1.", "2.", "===> 3", "=> 4")
+            if (menuChoiceEnabled) {
+                // Pattern 3a: Number followed by dot (e.g. " 1. ")
+                Matcher mNum = MENU_NUMBER_PATTERN.matcher(line);
+                while (mNum.find()) {
+                    int startCol = mNum.start(1);
+                    int endCol = mNum.end();
+                    if (isRangeOccupied(occupied, startCol, endCol)) continue;
+
+                    String choiceNum = mNum.group(1);
+                    String action = choiceNum + "[enter]";
+                    String tooltip = "Select option " + choiceNum;
+
+                    Hotspot h = new Hotspot(
+                            HotspotType.MENU_CHOICE,
+                            r, startCol, r, endCol - 1,
+                            choiceNum + ".", action, tooltip
+                    );
+                    hotspots.add(h);
+                    markOccupied(occupied, startCol, endCol);
+                }
+
+                // Pattern 3b: Prompt followed by number (e.g. "===> 3")
+                Matcher mPrompt = MENU_PROMPT_PATTERN.matcher(line);
+                while (mPrompt.find()) {
+                    int startCol = mPrompt.start();
+                    int endCol = mPrompt.end();
+                    if (isRangeOccupied(occupied, startCol, endCol)) continue;
+
+                    String choiceNum = mPrompt.group(1);
+                    String action = choiceNum + "[enter]";
+                    String tooltip = "Execute choice " + choiceNum;
+
+                    Hotspot h = new Hotspot(
+                            HotspotType.MENU_CHOICE,
+                            r, startCol, r, endCol - 1,
+                            mPrompt.group(), action, tooltip
+                    );
+                    hotspots.add(h);
+                    markOccupied(occupied, startCol, endCol);
+                }
+            }
+        }
+
+        this.cachedScreenText = screenText;
+        this.cachedRows = rows;
+        this.cachedCols = cols;
+        this.cachedHotspots = Collections.unmodifiableList(hotspots);
+
+        return cachedHotspots;
+    }
+
+    /**
+     * Hit-test for a hotspot at the specified terminal row and column.
+     */
+    public Hotspot findHotspot(int row, int col) {
+        for (Hotspot h : cachedHotspots) {
+            if (h.contains(row, col)) {
+                return h;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Query currently active cached hotspots.
+     */
+    public List<Hotspot> getHotspots() {
+        return cachedHotspots;
+    }
+
+    private static void markOccupied(boolean[] arr, int start, int end) {
+        for (int i = Math.max(0, start); i < Math.min(arr.length, end); i++) {
+            arr[i] = true;
+        }
+    }
+
+    private static boolean isRangeOccupied(boolean[] arr, int start, int end) {
+        for (int i = Math.max(0, start); i < Math.min(arr.length, end); i++) {
+            if (arr[i]) return true;
+        }
+        return false;
+    }
+}

j3270/src/main/java/haus/nightmare/j3270/ui/KeyBindings.java

@@ -206,7 +206,8 @@ public class KeyBindings {
 
     /**
      * Parse a .kmp file from a Reader.
-     * Supports both INI-style KEY<n>=action formats and bind statements.
+     * Supports both IBM Host On-Demand (HoD) .kmp format (hashKey prefixes)
+     * and IBM Personal Communications (PCOMM) INI-style and bind statements.
      *
      * @param reader the reader to parse from
      * @return Map of j3270 action names to key stroke bindings
@@ -214,11 +215,38 @@ public class KeyBindings {
      */
     public static Map<String, String> parseKmp(Reader reader) throws IOException {
         BufferedReader br = (reader instanceof BufferedReader) ? (BufferedReader) reader : new BufferedReader(reader);
-        Map<String, List<String>> actionToBindings = new LinkedHashMap<>();
+        List<String> rawLines = new ArrayList<>();
-
+        boolean hasHodKeyRemap = false;
+        boolean hasHodHashKey = false;
         String line;
         while ((line = br.readLine()) != null) {
-            line = line.trim();
+            rawLines.add(line);
+            String trimmed = line.trim();
+            if (trimmed.equalsIgnoreCase("[KeyRemap]")) {
+                hasHodKeyRemap = true;
+            }
+            int eq = trimmed.indexOf('=');
+            if (eq > 0) {
+                String left = trimmed.substring(0, eq).trim();
+                if (left.matches("^[A-Za-z][0-9]+$")) {
+                    hasHodHashKey = true;
+                }
+            }
+        }
+
+        if (hasHodKeyRemap || hasHodHashKey) {
+            Map<String, String> hodMap = haus.nightmare.lib3270j.input.HodKeyMap.parseHodKmp(
+                new StringReader(String.join("\n", rawLines))
+            );
+            if (hodMap != null && !hodMap.isEmpty()) {
+                return hodMap;
+            }
+        }
+
+        Map<String, List<String>> actionToBindings = new LinkedHashMap<>();
+
+        for (String raw : rawLines) {
+            line = raw.trim();
 
             // Strip comments
             int commentIdx = line.indexOf(';');
@@ -262,6 +290,22 @@ public class KeyBindings {
         return result;
     }
 
+    /**
+     * Export key bindings to a .kmp file using IBM HoD format.
+     */
+    public static void exportKmp(File file, Map<String, String> keyBindings) throws IOException {
+        try (BufferedWriter bw = new BufferedWriter(new FileWriter(file))) {
+            exportKmp(bw, keyBindings);
+        }
+    }
+
+    /**
+     * Export key bindings to a Writer using IBM HoD format.
+     */
+    public static void exportKmp(Writer writer, Map<String, String> keyBindings) throws IOException {
+        haus.nightmare.lib3270j.input.HodKeyMap.exportHodKmp(writer, keyBindings);
+    }
+
     private static void parseBindStatement(String stmt, Map<String, List<String>> actionToBindings) {
         String[] parts = stmt.split("\\s+", 2);
         if (parts.length < 2) return;
@@ -288,6 +332,19 @@ public class KeyBindings {
     }
 
     private static void parseKeyAssignment(String left, String right, Map<String, List<String>> actionToBindings) {
+        if (left.matches("^[A-Za-z][0-9]+$")) {
+            haus.nightmare.lib3270j.input.HodKeyMap.KeyEntry entry =
+                haus.nightmare.lib3270j.input.HodKeyMap.parseHashKey(left, right);
+            if (entry != null) {
+                String stroke = entry.toKeyStrokeString();
+                String act = haus.nightmare.lib3270j.input.HodKeyMap.resolveMnemonicToAction(right);
+                if (act != null && stroke != null && !stroke.isEmpty()) {
+                    addBinding(actionToBindings, act, stroke);
+                    return;
+                }
+            }
+        }
+
         // Case A: left is KEY<n> or Modifier-KEY<n>, right is mnemonic
         String action = resolveMnemonic(right);
         String keyStroke = null;

j3270/src/main/java/haus/nightmare/j3270/ui/MacroDialog.java

@@ -0,0 +1,392 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.ecl.ECLSession;
+import haus.nightmare.lib3270j.macro.Macro;
+import haus.nightmare.lib3270j.macro.MacroScreen;
+import haus.nightmare.lib3270j.macro.MacroScreens;
+import haus.nightmare.lib3270j.macro.MacroXmlParser;
+import haus.nightmare.lib3270j.macro.action.MacroAction;
+import haus.nightmare.lib3270j.macro.action.MacroActionPrompt;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import java.awt.*;
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * Interactive Swing dialog for loading, editing, running, and debugging
+ * IBM Host On-Demand XML Macros (<HASCRIPT> / .mac files).
+ */
+public class MacroDialog extends JDialog implements Macro.MacroListener, Macro.MacroPromptHandler {
+
+    private final Telnet3270Client client;
+    private final TerminalPanel terminalPanel;
+
+    private JTextArea xmlArea;
+    private JTextArea logArea;
+    private JLabel statusLabel;
+    private JButton playBtn;
+    private JButton pauseBtn;
+    private JButton stopBtn;
+
+    private Macro macro;
+
+    public MacroDialog(Frame parent, Telnet3270Client client, TerminalPanel terminalPanel) {
+        super(parent, "IBM HoD XML Macro Runtime (<HASCRIPT>)", false);
+        this.client = client;
+        this.terminalPanel = terminalPanel;
+        AppIcon.applyTo(this);
+
+        this.macro = new Macro(client);
+        this.macro.addMacroListener(this);
+        this.macro.setPromptHandler(this);
+
+        buildUI();
+        setSize(780, 580);
+        setLocationRelativeTo(parent);
+    }
+
+    private void buildUI() {
+        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
+        mainPanel.setBorder(new EmptyBorder(12, 14, 12, 14));
+
+        Font labelFont = ThemeManager.getUiFont();
+
+        // Top info label
+        JPanel topPanel = new JPanel(new BorderLayout(5, 5));
+        topPanel.setOpaque(false);
+        JLabel descLabel = new JLabel("<html>Load, edit, and execute IBM Host On-Demand XML Macro files (<code>.mac</code> / <code>&lt;HASCRIPT&gt;</code>).<br>"
+                + "Automates host flows via screen descriptors, actions, variables, and state transitions.</html>");
+        descLabel.setFont(labelFont);
+        topPanel.add(descLabel, BorderLayout.CENTER);
+        mainPanel.add(topPanel, BorderLayout.NORTH);
+
+        // Center split: XML editor and Execution Log
+        xmlArea = new JTextArea();
+        xmlArea.setFont(ThemeManager.getMonospacedUiFont());
+        xmlArea.setLineWrap(false);
+        xmlArea.setText(getDefaultMacroXml());
+        ThemeManager.styleTextArea(xmlArea);
+
+        JScrollPane xmlScroll = new JScrollPane(xmlArea);
+        ThemeManager.styleScrollPane(xmlScroll);
+        xmlScroll.setBorder(ThemeManager.createTitledBorder("Macro XML (<HASCRIPT>)"));
+
+        logArea = new JTextArea();
+        logArea.setFont(ThemeManager.getMonospacedUiFont(Font.PLAIN, -1));
+        logArea.setEditable(false);
+        logArea.setLineWrap(true);
+        ThemeManager.styleTextArea(logArea);
+
+        JScrollPane logScroll = new JScrollPane(logArea);
+        ThemeManager.styleScrollPane(logScroll);
+        logScroll.setBorder(ThemeManager.createTitledBorder("Execution Log"));
+
+        JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, xmlScroll, logScroll);
+        splitPane.setResizeWeight(0.65);
+        splitPane.setOpaque(false);
+        mainPanel.add(splitPane, BorderLayout.CENTER);
+
+        // Bottom control panel
+        JPanel bottomPanel = new JPanel(new BorderLayout(5, 5));
+        bottomPanel.setOpaque(false);
+
+        statusLabel = new JLabel("Status: Stopped");
+        statusLabel.setForeground(ThemeManager.getFgMuted());
+        statusLabel.setFont(labelFont);
+        bottomPanel.add(statusLabel, BorderLayout.WEST);
+
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));
+        buttonPanel.setOpaque(false);
+
+        JButton loadBtn = new JButton("Load .mac...");
+        ThemeManager.styleButton(loadBtn, ThemeManager.ButtonVariant.DEFAULT);
+        loadBtn.setFont(labelFont);
+        loadBtn.addActionListener(e -> loadMacroFile());
+
+        JButton saveBtn = new JButton("Save .mac...");
+        ThemeManager.styleButton(saveBtn, ThemeManager.ButtonVariant.DEFAULT);
+        saveBtn.setFont(labelFont);
+        saveBtn.addActionListener(e -> saveMacroFile());
+
+        playBtn = new JButton("Play");
+        ThemeManager.styleButton(playBtn, ThemeManager.ButtonVariant.PRIMARY);
+        playBtn.setFont(labelFont);
+        playBtn.addActionListener(e -> playMacro());
+
+        pauseBtn = new JButton("Pause");
+        ThemeManager.styleButton(pauseBtn, ThemeManager.ButtonVariant.DEFAULT);
+        pauseBtn.setFont(labelFont);
+        pauseBtn.setEnabled(false);
+        pauseBtn.addActionListener(e -> togglePause());
+
+        stopBtn = new JButton("Stop");
+        ThemeManager.styleButton(stopBtn, ThemeManager.ButtonVariant.DEFAULT);
+        stopBtn.setFont(labelFont);
+        stopBtn.setEnabled(false);
+        stopBtn.addActionListener(e -> stopMacro());
+
+        JButton clearLogBtn = new JButton("Clear Log");
+        ThemeManager.styleButton(clearLogBtn, ThemeManager.ButtonVariant.DEFAULT);
+        clearLogBtn.setFont(labelFont);
+        clearLogBtn.addActionListener(e -> logArea.setText(""));
+
+        JButton closeBtn = new JButton("Close");
+        ThemeManager.styleButton(closeBtn, ThemeManager.ButtonVariant.CANCEL);
+        closeBtn.setFont(labelFont);
+        closeBtn.addActionListener(e -> dispose());
+
+        buttonPanel.add(loadBtn);
+        buttonPanel.add(saveBtn);
+        buttonPanel.add(Box.createHorizontalStrut(8));
+        buttonPanel.add(playBtn);
+        buttonPanel.add(pauseBtn);
+        buttonPanel.add(stopBtn);
+        buttonPanel.add(clearLogBtn);
+        buttonPanel.add(Box.createHorizontalStrut(8));
+        buttonPanel.add(closeBtn);
+
+        bottomPanel.add(buttonPanel, BorderLayout.EAST);
+        mainPanel.add(bottomPanel, BorderLayout.SOUTH);
+
+        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
+    }
+
+    private void loadMacroFile() {
+        JFileChooser chooser = new JFileChooser();
+        chooser.setDialogTitle("Open IBM HoD Macro");
+        chooser.setFileFilter(new FileNameExtensionFilter("IBM Macro (*.mac, *.xml)", "mac", "xml"));
+        if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
+            File f = chooser.getSelectedFile();
+            try (BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(f), StandardCharsets.UTF_8))) {
+                StringBuilder sb = new StringBuilder();
+                String line;
+                while ((line = r.readLine()) != null) {
+                    sb.append(line).append("\n");
+                }
+                xmlArea.setText(sb.toString());
+                log("Loaded macro file: " + f.getName());
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(this, "Failed to load macro file: " + ex.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+
+    private void saveMacroFile() {
+        JFileChooser chooser = new JFileChooser();
+        chooser.setDialogTitle("Save IBM HoD Macro");
+        chooser.setFileFilter(new FileNameExtensionFilter("IBM Macro (*.mac, *.xml)", "mac", "xml"));
+        if (chooser.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
+            File f = chooser.getSelectedFile();
+            if (!f.getName().contains(".")) {
+                f = new File(f.getParentFile(), f.getName() + ".mac");
+            }
+            try (Writer w = new OutputStreamWriter(new FileOutputStream(f), StandardCharsets.UTF_8)) {
+                w.write(xmlArea.getText());
+                log("Saved macro file: " + f.getName());
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(this, "Failed to save macro file: " + ex.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+
+    public void playMacro() {
+        String xml = xmlArea.getText();
+        if (xml == null || xml.trim().isEmpty()) {
+            JOptionPane.showMessageDialog(this, "Macro XML is empty.", "Warning", JOptionPane.WARNING_MESSAGE);
+            return;
+        }
+
+        if (client == null || !client.getConnectionState().isFullSession()) {
+            int opt = JOptionPane.showConfirmDialog(this,
+                    "Session is not currently connected to a host.\nDo you want to run macro anyway (descriptors will wait for connection)?",
+                    "Not Connected", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE);
+            if (opt != JOptionPane.YES_OPTION) {
+                return;
+            }
+        }
+
+        try {
+            MacroScreens screens = MacroXmlParser.parse(xml);
+            macro.setScreens(screens);
+            macro.setClient(client);
+
+            log("Starting macro: " + (screens.getName().isEmpty() ? "Untitled" : screens.getName()));
+            macro.play();
+        } catch (Exception ex) {
+            log("Parse / Launch Error: " + ex.getMessage());
+            JOptionPane.showMessageDialog(this, "Macro parsing error: " + ex.getMessage(), "Macro Error", JOptionPane.ERROR_MESSAGE);
+        }
+    }
+
+    public void togglePause() {
+        if (macro.getState() == Macro.STATE_PLAYING) {
+            macro.pause();
+            pauseBtn.setText("Resume");
+            log("Macro paused.");
+        } else if (macro.getState() == Macro.STATE_PAUSED) {
+            macro.resume();
+            pauseBtn.setText("Pause");
+            log("Macro resumed.");
+        }
+    }
+
+    public void stopMacro() {
+        macro.stop();
+        log("Macro stopped by user.");
+    }
+
+    private void log(String msg) {
+        SwingUtilities.invokeLater(() -> {
+            logArea.append(msg + "\n");
+            logArea.setCaretPosition(logArea.getDocument().getLength());
+        });
+    }
+
+    // ========== MacroListener Callbacks ==========
+
+    @Override
+    public void macroStateChanged(Macro macro, int oldState, int newState) {
+        SwingUtilities.invokeLater(() -> {
+            switch (newState) {
+                case Macro.STATE_PLAYING:
+                    statusLabel.setText("Status: Playing");
+                    statusLabel.setForeground(ThemeManager.getFgMain());
+                    playBtn.setEnabled(false);
+                    pauseBtn.setEnabled(true);
+                    pauseBtn.setText("Pause");
+                    stopBtn.setEnabled(true);
+                    break;
+                case Macro.STATE_PAUSED:
+                    statusLabel.setText("Status: Paused");
+                    statusLabel.setForeground(ThemeManager.getFgMuted());
+                    pauseBtn.setText("Resume");
+                    break;
+                case Macro.STATE_ERROR:
+                    statusLabel.setText("Status: Error");
+                    statusLabel.setForeground(Color.RED);
+                    playBtn.setEnabled(true);
+                    pauseBtn.setEnabled(false);
+                    stopBtn.setEnabled(false);
+                    break;
+                case Macro.STATE_STOPPED:
+                default:
+                    statusLabel.setText("Status: Stopped");
+                    statusLabel.setForeground(ThemeManager.getFgMuted());
+                    playBtn.setEnabled(true);
+                    pauseBtn.setEnabled(false);
+                    pauseBtn.setText("Pause");
+                    stopBtn.setEnabled(false);
+                    break;
+            }
+        });
+    }
+
+    @Override
+    public void macroScreenMatching(MacroScreen screen) {
+        log("Matched screen: [" + screen.getName() + "]");
+        if (terminalPanel != null) {
+            terminalPanel.repaint();
+        }
+    }
+
+    @Override
+    public void macroActionExecuting(MacroAction action) {
+        log("  -> Executing: " + action.getClass().getSimpleName());
+        if (terminalPanel != null) {
+            terminalPanel.repaint();
+        }
+    }
+
+    @Override
+    public void macroMessage(String title, String message) {
+        log("Message [" + title + "]: " + message);
+        SwingUtilities.invokeLater(() -> {
+            JOptionPane.showMessageDialog(this, message, title.isEmpty() ? "Macro Message" : title, JOptionPane.INFORMATION_MESSAGE);
+        });
+    }
+
+    @Override
+    public void macroError(String error) {
+        log("ERROR: " + error);
+    }
+
+    // ========== MacroPromptHandler Callback ==========
+
+    @Override
+    public String prompt(MacroActionPrompt prompt) {
+        AtomicReference<String> result = new AtomicReference<>(null);
+
+        if (SwingUtilities.isEventDispatchThread()) {
+            result.set(showPromptModal(prompt));
+        } else {
+            try {
+                SwingUtilities.invokeAndWait(() -> {
+                    result.set(showPromptModal(prompt));
+                });
+            } catch (Exception e) {
+                return null;
+            }
+        }
+        return result.get();
+    }
+
+    private String showPromptModal(MacroActionPrompt prompt) {
+        JPanel panel = new JPanel(new BorderLayout(5, 5));
+        JLabel msgLabel = new JLabel(prompt.getDescription().isEmpty() ? "Enter parameter:" : prompt.getDescription());
+        panel.add(msgLabel, BorderLayout.NORTH);
+
+        JTextField textField;
+        if (prompt.isEncrypted()) {
+            textField = new JPasswordField(prompt.getDefaultValue(), prompt.getLen() > 0 ? Math.min(prompt.getLen(), 25) : 15);
+        } else {
+            textField = new JTextField(prompt.getDefaultValue(), prompt.getLen() > 0 ? Math.min(prompt.getLen(), 25) : 15);
+        }
+        panel.add(textField, BorderLayout.CENTER);
+
+        int opt = JOptionPane.showConfirmDialog(this, panel,
+                prompt.getTitle().isEmpty() ? "Macro Input Prompt" : prompt.getTitle(),
+                JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE);
+
+        if (opt == JOptionPane.OK_OPTION) {
+            if (textField instanceof JPasswordField) {
+                return new String(((JPasswordField) textField).getPassword());
+            }
+            return textField.getText();
+        }
+        return null;
+    }
+
+    private String getDefaultMacroXml() {
+        return "<HASCRIPT name=\"SampleLogon\" timeout=\"15000\" usevars=\"true\">\n"
+             + "  <vars>\n"
+             + "    <create name=\"$userId\" type=\"string\" value=\"USER01\" />\n"
+             + "    <create name=\"$count\" type=\"integer\" value=\"0\" />\n"
+             + "  </vars>\n\n"
+             + "  <screen name=\"LogonScreen\" entryscreen=\"true\">\n"
+             + "    <description>\n"
+             + "      <oia status=\"NOTINHIBITED\" />\n"
+             + "    </description>\n"
+             + "    <actions>\n"
+             + "      <input value=\"$userId + '[enter]'\" movecursor=\"true\" xlatehostkeys=\"true\" />\n"
+             + "    </actions>\n"
+             + "    <nextscreens timeout=\"10000\">\n"
+             + "      <nextscreen name=\"ReadyScreen\" />\n"
+             + "    </nextscreens>\n"
+             + "  </screen>\n\n"
+             + "  <screen name=\"ReadyScreen\" exitscreen=\"true\">\n"
+             + "    <description>\n"
+             + "      <oia status=\"NOTINHIBITED\" />\n"
+             + "    </description>\n"
+             + "    <actions>\n"
+             + "      <message title=\"Success\" value=\"Logon macro completed successfully!\" />\n"
+             + "    </actions>\n"
+             + "  </screen>\n"
+             + "</HASCRIPT>";
+    }
+}

j3270/src/main/java/haus/nightmare/j3270/ui/PrinterSessionDialog.java

@@ -48,6 +48,7 @@ public class PrinterSessionDialog extends JDialog implements PrintSessionListene
     public PrinterSessionDialog(Frame parent, String defaultHost, int defaultPort, boolean defaultTls) {
         super(parent, "IBM 3287 Printer Session Manager", false);
         this.parent = parent;
+        AppIcon.applyTo(this);
 
         config = new PrinterConfig(defaultHost, defaultPort);
         config.setUseTls(defaultTls);
@@ -71,7 +72,7 @@ public class PrinterSessionDialog extends JDialog implements PrintSessionListene
         gbc.insets = new Insets(3, 4, 3, 4);
         gbc.fill = GridBagConstraints.HORIZONTAL;
 
-        Font labelFont = new Font(Font.SANS_SERIF, Font.PLAIN, 12);
+        Font labelFont = ThemeManager.getUiFont();
 
         // Host / Port
         gbc.gridx = 0; gbc.gridy = 0;
@@ -205,7 +206,7 @@ public class PrinterSessionDialog extends JDialog implements PrintSessionListene
 
         // Spool text area
         spoolArea = new JTextArea();
-        spoolArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
+        spoolArea.setFont(ThemeManager.getMonospacedUiFont());
         spoolArea.setEditable(false);
         ThemeManager.styleTextArea(spoolArea);
 
@@ -256,7 +257,7 @@ public class PrinterSessionDialog extends JDialog implements PrintSessionListene
 
     private JTextField createField(String text, int cols) {
         JTextField tf = new JTextField(text, cols);
-        tf.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
+        tf.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleTextField(tf);
         return tf;
     }

j3270/src/main/java/haus/nightmare/j3270/ui/ScreenHistoryDialog.java

@@ -0,0 +1,323 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.j3270.J3270App;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.screen.ScreenHistoryBuffer;
+import haus.nightmare.lib3270j.screen.ScreenHistoryBuffer.ScreenHistoryListener;
+import haus.nightmare.lib3270j.screen.ScreenHistoryBuffer.ScreenSnapshot;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.awt.*;
+import java.awt.datatransfer.Clipboard;
+import java.awt.datatransfer.StringSelection;
+import java.awt.event.*;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * Screen History viewer dialog matching IBM Host On-Demand ScreenHistory UI parity.
+ *
+ * Provides:
+ * - Interactive JSlider scrubber to review past 64 screen buffer frames
+ * - Previous / Next navigation buttons
+ * - Exact monospace terminal frame preview with selection capability
+ * - Copy Screen, Copy Selection, and Copy as Table actions
+ * - Live update synchronization as new host screens arrive
+ */
+public class ScreenHistoryDialog extends JDialog implements ScreenHistoryListener {
+
+    private final J3270App parentApp;
+    private final Telnet3270Client client;
+    private final ScreenHistoryBuffer historyBuffer;
+
+    private JSlider scrubSlider;
+    private JButton btnPrev;
+    private JButton btnNext;
+    private JLabel infoLabel;
+    private JTextArea previewArea;
+    private JButton btnCopyScreen;
+    private JButton btnCopySelection;
+    private JButton btnCopyTable;
+    private JButton btnClose;
+
+    private int currentIndex = -1; // 0-based index into historyBuffer
+    private final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+
+    public ScreenHistoryDialog(J3270App parent, Telnet3270Client client) {
+        super(parent, "Screen History", false);
+        this.parentApp = parent;
+        this.client = client;
+        this.historyBuffer = client != null ? client.getScreenHistoryBuffer() : null;
+
+        AppIcon.applyTo(this);
+        initComponents();
+        setupKeyNavigation();
+
+        if (historyBuffer != null) {
+            historyBuffer.addListener(this);
+            refreshHistoryView(historyBuffer.size() - 1);
+        } else {
+            updateEmptyState();
+        }
+
+        addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosed(WindowEvent e) {
+                if (historyBuffer != null) {
+                    historyBuffer.removeListener(ScreenHistoryDialog.this);
+                }
+            }
+        });
+
+        setSize(780, 560);
+        setLocationRelativeTo(parent);
+    }
+
+    private void initComponents() {
+        setLayout(new BorderLayout(6, 6));
+        JPanel contentPane = new JPanel(new BorderLayout(8, 8));
+        contentPane.setBorder(new EmptyBorder(10, 10, 10, 10));
+        setContentPane(contentPane);
+
+        // Top Navigation Bar
+        JPanel topPanel = new JPanel(new BorderLayout(8, 8));
+        topPanel.setBorder(BorderFactory.createTitledBorder("History Scrub Navigation"));
+
+        JPanel sliderPanel = new JPanel(new BorderLayout(6, 6));
+        btnPrev = new JButton("◄ Prev");
+        ThemeManager.styleButton(btnPrev, ThemeManager.ButtonVariant.DEFAULT);
+        btnPrev.addActionListener(e -> stepHistory(-1));
+
+        btnNext = new JButton("Next ►");
+        ThemeManager.styleButton(btnNext, ThemeManager.ButtonVariant.DEFAULT);
+        btnNext.addActionListener(e -> stepHistory(1));
+
+        scrubSlider = new JSlider(1, 1, 1);
+        scrubSlider.setMajorTickSpacing(10);
+        scrubSlider.setMinorTickSpacing(1);
+        scrubSlider.setPaintTicks(true);
+        scrubSlider.setSnapToTicks(true);
+        scrubSlider.addChangeListener(e -> {
+            if (!scrubSlider.getValueIsAdjusting()) {
+                int selected = scrubSlider.getValue() - 1;
+                displayScreen(selected);
+            }
+        });
+
+        sliderPanel.add(btnPrev, BorderLayout.WEST);
+        sliderPanel.add(scrubSlider, BorderLayout.CENTER);
+        sliderPanel.add(btnNext, BorderLayout.EAST);
+
+        infoLabel = new JLabel("Screen 0 of 0", SwingConstants.CENTER);
+        infoLabel.setFont(infoLabel.getFont().deriveFont(Font.BOLD, 13f));
+        topPanel.add(sliderPanel, BorderLayout.CENTER);
+        topPanel.add(infoLabel, BorderLayout.SOUTH);
+
+        contentPane.add(topPanel, BorderLayout.NORTH);
+
+        // Center Terminal Preview Pane
+        previewArea = new JTextArea();
+        previewArea.setEditable(false);
+        previewArea.setFont(new Font("Monospaced", Font.PLAIN, 14));
+        previewArea.setBackground(Color.BLACK);
+        previewArea.setForeground(new Color(0, 255, 65)); // 3270 Green Phosphor
+        previewArea.setCaretColor(Color.WHITE);
+        previewArea.setLineWrap(false);
+        previewArea.setMargin(new Insets(6, 6, 6, 6));
+
+        JScrollPane scrollPane = new JScrollPane(previewArea);
+        scrollPane.setBorder(BorderFactory.createLineBorder(new Color(60, 60, 60)));
+        contentPane.add(scrollPane, BorderLayout.CENTER);
+
+        // Bottom Action Bar
+        JPanel bottomPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 8, 4));
+
+        btnCopyScreen = new JButton("Copy Screen");
+        ThemeManager.styleButton(btnCopyScreen, ThemeManager.ButtonVariant.DEFAULT);
+        btnCopyScreen.setToolTipText("Copy entire historical screen to clipboard");
+        btnCopyScreen.addActionListener(e -> copyCurrentScreen());
+
+        btnCopySelection = new JButton("Copy Selection");
+        ThemeManager.styleButton(btnCopySelection, ThemeManager.ButtonVariant.DEFAULT);
+        btnCopySelection.setToolTipText("Copy selected text to clipboard");
+        btnCopySelection.addActionListener(e -> copySelectedText());
+
+        btnCopyTable = new JButton("Copy as Table");
+        ThemeManager.styleButton(btnCopyTable, ThemeManager.ButtonVariant.DEFAULT);
+        btnCopyTable.setToolTipText("Copy screen text with trimmed trailing spaces per row");
+        btnCopyTable.addActionListener(e -> copyAsTable());
+
+        btnClose = new JButton("Close");
+        ThemeManager.styleButton(btnClose, ThemeManager.ButtonVariant.DEFAULT);
+        btnClose.addActionListener(e -> setVisible(false));
+
+        bottomPanel.add(btnCopyScreen);
+        bottomPanel.add(btnCopySelection);
+        bottomPanel.add(btnCopyTable);
+        bottomPanel.add(Box.createHorizontalStrut(12));
+        bottomPanel.add(btnClose);
+
+        contentPane.add(bottomPanel, BorderLayout.SOUTH);
+    }
+
+    private void setupKeyNavigation() {
+        // Keyboard shortcuts for rapid scrub navigation
+        Action prevAction = new AbstractAction() {
+            @Override public void actionPerformed(ActionEvent e) { stepHistory(-1); }
+        };
+        Action nextAction = new AbstractAction() {
+            @Override public void actionPerformed(ActionEvent e) { stepHistory(1); }
+        };
+        Action homeAction = new AbstractAction() {
+            @Override public void actionPerformed(ActionEvent e) { displayScreen(0); }
+        };
+        Action endAction = new AbstractAction() {
+            @Override public void actionPerformed(ActionEvent e) {
+                if (historyBuffer != null) displayScreen(historyBuffer.size() - 1);
+            }
+        };
+        Action closeAction = new AbstractAction() {
+            @Override public void actionPerformed(ActionEvent e) { setVisible(false); }
+        };
+
+        JRootPane root = getRootPane();
+        InputMap im = root.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
+        ActionMap am = root.getActionMap();
+
+        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, InputEvent.ALT_DOWN_MASK), "prevScreen");
+        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_UP, 0), "prevScreen");
+        am.put("prevScreen", prevAction);
+
+        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, InputEvent.ALT_DOWN_MASK), "nextScreen");
+        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_DOWN, 0), "nextScreen");
+        am.put("nextScreen", nextAction);
+
+        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_HOME, InputEvent.ALT_DOWN_MASK), "homeScreen");
+        am.put("homeScreen", homeAction);
+
+        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_END, InputEvent.ALT_DOWN_MASK), "endScreen");
+        am.put("endScreen", endAction);
+
+        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), "closeDialog");
+        am.put("closeDialog", closeAction);
+    }
+
+    private void stepHistory(int delta) {
+        if (historyBuffer == null || historyBuffer.isEmpty()) return;
+        int target = currentIndex + delta;
+        target = Math.max(0, Math.min(target, historyBuffer.size() - 1));
+        displayScreen(target);
+    }
+
+    private void displayScreen(int index) {
+        if (historyBuffer == null || historyBuffer.isEmpty()) {
+            updateEmptyState();
+            return;
+        }
+
+        int total = historyBuffer.size();
+        index = Math.max(0, Math.min(index, total - 1));
+        currentIndex = index;
+
+        ScreenSnapshot snap = historyBuffer.get(index);
+        if (snap != null) {
+            previewArea.setText(snap.getText());
+            previewArea.setCaretPosition(0);
+
+            String timeStr = dateFormat.format(new Date(snap.getTimestamp()));
+            infoLabel.setText("Screen " + (index + 1) + " of " + total + " (" + timeStr + ") — "
+                    + snap.getRows() + "x" + snap.getCols() + ", Cursor: ["
+                    + (snap.getCursorRow() + 1) + "," + (snap.getCursorCol() + 1) + "]");
+
+            scrubSlider.setValue(index + 1);
+        }
+
+        btnPrev.setEnabled(index > 0);
+        btnNext.setEnabled(index < total - 1);
+        btnCopyScreen.setEnabled(true);
+        btnCopySelection.setEnabled(true);
+        btnCopyTable.setEnabled(true);
+    }
+
+    private void updateEmptyState() {
+        currentIndex = -1;
+        previewArea.setText("No screen history captured yet.\n\nScreens are automatically recorded as the host session receives updates or unlocks the keyboard.");
+        infoLabel.setText("Screen 0 of 0 — Empty History");
+        scrubSlider.setEnabled(false);
+        btnPrev.setEnabled(false);
+        btnNext.setEnabled(false);
+        btnCopyScreen.setEnabled(false);
+        btnCopySelection.setEnabled(false);
+        btnCopyTable.setEnabled(false);
+    }
+
+    /**
+     * Refresh slider bounds and select target index.
+     */
+    public synchronized void refreshHistoryView(int targetIndex) {
+        if (historyBuffer == null || historyBuffer.isEmpty()) {
+            updateEmptyState();
+            return;
+        }
+
+        int total = historyBuffer.size();
+        scrubSlider.setEnabled(true);
+        scrubSlider.setMinimum(1);
+        scrubSlider.setMaximum(total);
+
+        int select = targetIndex >= 0 ? Math.min(targetIndex, total - 1) : total - 1;
+        displayScreen(select);
+    }
+
+    @Override
+    public void onHistoryUpdated(ScreenHistoryBuffer buffer, ScreenSnapshot newSnapshot) {
+        SwingUtilities.invokeLater(() -> {
+            boolean wasAtLatest = (currentIndex >= 0 && currentIndex == buffer.size() - 2);
+            int newTotal = buffer.size();
+            scrubSlider.setMaximum(newTotal);
+
+            if (wasAtLatest || currentIndex < 0) {
+                // Keep tracked with latest frame
+                displayScreen(newTotal - 1);
+            } else {
+                // Keep operator's active scrub position, update label
+                displayScreen(currentIndex);
+            }
+        });
+    }
+
+    private void copyCurrentScreen() {
+        if (historyBuffer == null || currentIndex < 0) return;
+        ScreenSnapshot snap = historyBuffer.get(currentIndex);
+        if (snap != null) {
+            setClipboardText(snap.getText());
+        }
+    }
+
+    private void copySelectedText() {
+        String selected = previewArea.getSelectedText();
+        if (selected != null && !selected.isEmpty()) {
+            setClipboardText(selected);
+        } else {
+            copyCurrentScreen();
+        }
+    }
+
+    private void copyAsTable() {
+        if (historyBuffer == null || currentIndex < 0) return;
+        ScreenSnapshot snap = historyBuffer.get(currentIndex);
+        if (snap != null) {
+            setClipboardText(snap.getFormattedTable());
+        }
+    }
+
+    private void setClipboardText(String text) {
+        try {
+            Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
+            cb.setContents(new StringSelection(text), null);
+        } catch (Exception e) {
+            Toolkit.getDefaultToolkit().beep();
+        }
+    }
+}

j3270/src/main/java/haus/nightmare/j3270/ui/ScriptDialog.java

@@ -25,6 +25,7 @@ public class ScriptDialog extends JDialog {
         super(parent, "Run Keystrokes / ECL Script", false);
         this.client = client;
         this.terminalPanel = terminalPanel;
+        AppIcon.applyTo(this);
 
         buildUI();
         setSize(600, 480);
@@ -35,7 +36,7 @@ public class ScriptDialog extends JDialog {
         JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
         mainPanel.setBorder(new EmptyBorder(12, 14, 12, 14));
 
-        Font labelFont = new Font(Font.SANS_SERIF, Font.PLAIN, 13);
+        Font labelFont = ThemeManager.getUiFont();
 
         // Header
         JPanel topPanel = new JPanel(new BorderLayout(5, 5));
@@ -48,7 +49,7 @@ public class ScriptDialog extends JDialog {
 
         // Script area
         scriptArea = new JTextArea();
-        scriptArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
+        scriptArea.setFont(ThemeManager.getMonospacedUiFont());
         scriptArea.setLineWrap(true);
         scriptArea.setWrapStyleWord(false);
         ThemeManager.styleTextArea(scriptArea);
@@ -74,7 +75,7 @@ public class ScriptDialog extends JDialog {
 
         for (String token : tokens) {
             JButton btn = new JButton(token);
-            btn.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 11));
+            btn.setFont(ThemeManager.getMonospacedUiFont(Font.PLAIN, -2));
             ThemeManager.styleButton(btn, ThemeManager.ButtonVariant.DEFAULT);
             btn.setFocusable(false);
             btn.setMargin(new Insets(2, 4, 2, 4));
@@ -94,7 +95,7 @@ public class ScriptDialog extends JDialog {
 
         statusLabel = new JLabel("Ready");
         statusLabel.setForeground(ThemeManager.getFgMuted());
-        statusLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
+        statusLabel.setFont(labelFont);
         bottomPanel.add(statusLabel, BorderLayout.WEST);
 
         JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));

j3270/src/main/java/haus/nightmare/j3270/ui/StatusBar.java

@@ -29,14 +29,15 @@ public class StatusBar extends JPanel {
 
     private Telnet3270Client client;
     private TerminalPanel terminalPanel;
+    private haus.nightmare.lib3270j.ecl.ECLOIANotify oiaNotifyListener;
 
     public StatusBar() {
         setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
         setBackground(ThemeManager.getStatusBarBg());
         setBorder(BorderFactory.createMatteBorder(1, 0, 0, 0, ThemeManager.getStatusBarBorder()));
-        setPreferredSize(new Dimension(800, 22));
 
-        Font oiaFont = new Font(Font.MONOSPACED, Font.PLAIN, 12);
+        Font oiaFont = ThemeManager.getMonospacedUiFont();
+        updateBarHeight(oiaFont);
 
         connectionStatus = createLabel("Not Connected", oiaFont, ThemeManager.getOiaFgDim());
         tlsStatus = createLabel("", oiaFont, ThemeManager.getOiaFgNormal());
@@ -131,8 +132,15 @@ public class StatusBar extends JPanel {
     }
 
     public void setClient(Telnet3270Client client, TerminalPanel terminalPanel) {
+        if (this.client != null && this.client.getOIA() != null && this.oiaNotifyListener != null) {
+            this.client.getOIA().unregisterOIAEvent(this.oiaNotifyListener);
+        }
         this.client = client;
         this.terminalPanel = terminalPanel;
+        if (this.client != null && this.client.getOIA() != null) {
+            this.oiaNotifyListener = event -> updateStatus();
+            this.client.getOIA().registerOIAEvent(this.oiaNotifyListener);
+        }
         updateStatus();
     }
 
@@ -143,9 +151,36 @@ public class StatusBar extends JPanel {
         }
         setBackground(ThemeManager.getStatusBarBg(theme));
         setBorder(BorderFactory.createMatteBorder(1, 0, 0, 0, ThemeManager.getStatusBarBorder(theme)));
+        Font oiaFont = ThemeManager.getMonospacedUiFont();
+        updateBarHeight(oiaFont);
+        applyFontRecursively(this, oiaFont);
+        revalidate();
+        repaint();
         updateStatus();
     }
 
+    private void updateBarHeight(Font font) {
+        int fontHeight = 16;
+        try {
+            FontMetrics fm = getFontMetrics(font);
+            if (fm != null) fontHeight = fm.getHeight();
+        } catch (Exception ignored) {
+            fontHeight = font.getSize() + 4;
+        }
+        int barHeight = Math.max(22, fontHeight + 6);
+        setPreferredSize(new Dimension(800, barHeight));
+    }
+
+    private void applyFontRecursively(Component comp, Font font) {
+        if (comp instanceof JLabel) {
+            comp.setFont(font);
+        } else if (comp instanceof Container) {
+            for (Component child : ((Container) comp).getComponents()) {
+                applyFontRecursively(child, font);
+            }
+        }
+    }
+
     public void updateStatus() {
         if (isDisplayable() && !SwingUtilities.isEventDispatchThread()) {
             SwingUtilities.invokeLater(this::updateStatus);
@@ -361,4 +396,8 @@ public class StatusBar extends JPanel {
         cursorPosition.setText(String.format("%03d/%03d [%04d]", row, col, curAddr));
         cursorPosition.setForeground(ThemeManager.getOiaFgNormal(theme));
     }
+
+    public String getLockStatusText() {
+        return lockStatus != null ? lockStatus.getText() : "";
+    }
 }

j3270/src/main/java/haus/nightmare/j3270/ui/TerminalPanel.java

@@ -25,8 +25,8 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
     // Font and cell dimensions
     private Font terminalFont;
     private Font boldTerminalFont;
-    private int cellWidth;
+    int cellWidth;
-    private int cellHeight;
+    int cellHeight;
     private int fontAscent;
     private int fontDescent;
     private int padding = 4;
@@ -65,6 +65,8 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
     private static final Color CURSOR_COLOR = new Color(255, 255, 255, 180);
     private boolean crosshairRulerEnabled = false;
     private static final Color CROSSHAIR_RULER_COLOR = new Color(0, 255, 0, 102); // 40% alpha (cRC)
+    private boolean inputMaskEnabled = haus.nightmare.j3270.config.Settings.getInputMask();
+    private String inputMaskChar = haus.nightmare.j3270.config.Settings.getInputMaskChar();
     private boolean textBlinkVisible = true;
     private Image wallpaperImage = null;
     private haus.nightmare.lib3270j.graphics.HODWallpaper hodWallpaper = null;
@@ -72,8 +74,18 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
     private int selectionStartRow = -1, selectionStartCol = -1;
     private int selectionEndRow = -1, selectionEndCol = -1;
     private boolean isDragging = false;
+    private boolean isActivationClick = false;
     private static final Color SELECTION_COLOR = new Color(75, 110, 175, 102); // 40% alpha blend
 
+    public enum DragHandle {
+        NONE, NW, N, NE, E, SE, S, SW, W, MOVE
+    }
+    private boolean trimRectSizingHandles = false;
+    private DragHandle activeDragHandle = DragHandle.NONE;
+    private int dragAnchorRow = -1;
+    private int dragAnchorCol = -1;
+    private int initialBoxR1 = -1, initialBoxR2 = -1, initialBoxC1 = -1, initialBoxC2 = -1;
+
     // ========== Search Highlight state ==========
     private int searchHighlightAddr = -1;
     private int searchHighlightLen = 0;
@@ -86,6 +98,14 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
     private boolean resizeGuard = false;
     private StatusBar statusBar = null;
 
+    // ========== Phase 25: Hotspots & Mouse Wheel ==========
+    private final HotspotEngine hotspotEngine = new HotspotEngine();
+    private HotspotEngine.Hotspot hoveredHotspot = null;
+    private boolean hotspotsEnabled = haus.nightmare.j3270.config.Settings.getHotspotsEnabled();
+    private boolean mouseWheelEnabled = haus.nightmare.j3270.config.Settings.getMouseWheelEnabled();
+    private String mouseWheelUpAction = haus.nightmare.j3270.config.Settings.getMouseWheelUpKey();
+    private String mouseWheelDownAction = haus.nightmare.j3270.config.Settings.getMouseWheelDownKey();
+
     // ========== Mode and Listener State ==========
     private boolean insertMode = false;
 
@@ -115,7 +135,7 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
     /**
      * Compute the horizontal render offset to center the grid within the panel.
      */
-    private int getRenderOffsetX() {
+    int getRenderOffsetX() {
         int termCols = 80;
         if (client != null) termCols = client.getScreenBuffer().getDisplayCols();
         int gridW = termCols * cellWidth;
@@ -126,7 +146,7 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
     /**
      * Compute the vertical render offset to center the grid within the panel.
      */
-    private int getRenderOffsetY() {
+    int getRenderOffsetY() {
         int termRows = 24;
         if (client != null) termRows = client.getScreenBuffer().getDisplayRows();
         int gridH = termRows * cellHeight;
@@ -176,6 +196,7 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         setupCursorBlink();
 
         blockSelectMode = haus.nightmare.j3270.config.Settings.getBlockSelectMode();
+        trimRectSizingHandles = haus.nightmare.j3270.config.Settings.getTrimRectSizingHandles();
         crosshairRulerEnabled = haus.nightmare.j3270.config.Settings.getCrosshairRuler();
         String cStyle = haus.nightmare.j3270.config.Settings.getCursorStyle();
         cursorStyle = "UNDERLINE".equalsIgnoreCase(cStyle) ? CursorStyle.UNDERLINE : CursorStyle.BLOCK;
@@ -184,7 +205,16 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         MouseAdapter mouseHandler = new MouseAdapter() {
             @Override
             public void mousePressed(MouseEvent e) {
-                requestFocusInWindow();
+                Window win = SwingUtilities.getWindowAncestor(TerminalPanel.this);
+                boolean wasWindowInactive = (win != null && (!win.isActive() || !win.isFocused()));
+                boolean wasPanelUnfocused = !hasFocus();
+                isActivationClick = wasWindowInactive || wasPanelUnfocused;
+
+                if (wasWindowInactive) {
+                    win.toFront();
+                    win.requestFocus();
+                }
+                requestFocus();
 
                 // Right-click context menu
                 if (SwingUtilities.isRightMouseButton(e)) {
@@ -204,18 +234,30 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                     row = Math.max(0, Math.min(row, displayRows - 1));
 
                     boolean isGraphic = client.getGocaDecoder() != null && client.getGocaDecoder().isGraphicsCursorActive();
-                    boolean isSelectableField = false;
+                    if (isGraphic || lightPenMode) {
-                    if (sb.isFormatted()) {
-                        int faPos = sb.findFieldAttribute(row * displayCols + col);
-                        if (faPos >= 0) {
-                            int fa = sb.getCell(faPos).fa & 0xFF;
-                            isSelectableField = haus.nightmare.lib3270j.protocol.DS3270Constants.faIsSelectable(fa) &&
-                                                !haus.nightmare.lib3270j.protocol.DS3270Constants.faIsZero(fa);
-                        }
-                    }
-                    if (isGraphic || lightPenMode || isSelectableField) {
                         clearSelection();
+                    } else if (SwingUtilities.isLeftMouseButton(e) && trimRectSizingHandles && hasSelection()) {
+                        DragHandle handle = getDragHandleAt(e.getX(), e.getY());
+                        if (handle != DragHandle.NONE) {
+                            activeDragHandle = handle;
+                            isDragging = true;
+                            dragAnchorRow = row;
+                            dragAnchorCol = col;
+                            initialBoxR1 = Math.min(selectionStartRow, selectionEndRow);
+                            initialBoxR2 = Math.max(selectionStartRow, selectionEndRow);
+                            initialBoxC1 = Math.min(selectionStartCol, selectionEndCol);
+                            initialBoxC2 = Math.max(selectionStartCol, selectionEndCol);
+                            repaint();
+                            return;
                         } else {
+                            activeDragHandle = DragHandle.NONE;
+                            selectionStartRow = row;
+                            selectionStartCol = col;
+                            selectionEndRow = row;
+                            selectionEndCol = col;
+                        }
+                    } else {
+                        activeDragHandle = DragHandle.NONE;
                         selectionStartRow = row;
                         selectionStartCol = col;
                         selectionEndRow = row;
@@ -249,9 +291,44 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                         col = Math.max(0, Math.min(col, sb.getDisplayCols() - 1));
                         row = Math.max(0, Math.min(row, sb.getDisplayRows() - 1));
 
+                        if (activeDragHandle != DragHandle.NONE) {
+                            if (activeDragHandle == DragHandle.MOVE) {
+                                int deltaR = row - dragAnchorRow;
+                                int deltaC = col - dragAnchorCol;
+                                int h = initialBoxR2 - initialBoxR1;
+                                int w = initialBoxC2 - initialBoxC1;
+                                int newR1 = Math.max(0, Math.min(initialBoxR1 + deltaR, sb.getDisplayRows() - 1 - h));
+                                int newC1 = Math.max(0, Math.min(initialBoxC1 + deltaC, sb.getDisplayCols() - 1 - w));
+                                selectionStartRow = newR1;
+                                selectionStartCol = newC1;
+                                selectionEndRow = newR1 + h;
+                                selectionEndCol = newC1 + w;
+                            } else {
+                                int newR1 = initialBoxR1;
+                                int newR2 = initialBoxR2;
+                                int newC1 = initialBoxC1;
+                                int newC2 = initialBoxC2;
+                                switch (activeDragHandle) {
+                                    case NW: newR1 = row; newC1 = col; break;
+                                    case N:  newR1 = row; break;
+                                    case NE: newR1 = row; newC2 = col; break;
+                                    case E:  newC2 = col; break;
+                                    case SE: newR2 = row; newC2 = col; break;
+                                    case S:  newR2 = row; break;
+                                    case SW: newR2 = row; newC1 = col; break;
+                                    case W:  newC1 = col; break;
+                                    default: break;
+                                }
+                                selectionStartRow = Math.min(newR1, newR2);
+                                selectionEndRow = Math.max(newR1, newR2);
+                                selectionStartCol = Math.min(newC1, newC2);
+                                selectionEndCol = Math.max(newC1, newC2);
+                            }
+                        } else {
                             selectionEndRow = row;
                             selectionEndCol = col;
                         }
+                    }
                     repaint();
                 }
             }
@@ -272,12 +349,72 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                     py = Math.max(0, Math.min(py, gHeight - 1));
                     client.getGocaDecoder().setGraphicCursorFromPixel(px, py);
                 }
+
+                // Phase 26.1: Drag handle cursor hover detection
+                if (trimRectSizingHandles && hasSelection() && client != null && client.getConnectionState().isFullSession()) {
+                    DragHandle handle = getDragHandleAt(e.getX(), e.getY());
+                    if (handle != DragHandle.NONE) {
+                        setCursor(getCursorForDragHandle(handle));
+                        setToolTipText(null);
+                        return;
+                    }
+                }
+
+                // Phase 25.2: Real-time hotspot hover detection
+                if (hotspotsEnabled && client != null && client.getScreenBuffer() != null) {
+                    int ox = getRenderOffsetX();
+                    int oy = getRenderOffsetY();
+                    ScreenBuffer sb = client.getScreenBuffer();
+                    int rows = sb.getDisplayRows();
+                    int cols = sb.getDisplayCols();
+                    int col = (e.getX() - ox) / cellWidth;
+                    int row = (e.getY() - oy) / cellHeight;
+                    if (row >= 0 && row < rows && col >= 0 && col < cols) {
+                        hotspotEngine.scan(sb);
+                        HotspotEngine.Hotspot h = hotspotEngine.findHotspot(row, col);
+                        if (h != null) {
+                            if (hoveredHotspot != h) {
+                                hoveredHotspot = h;
+                                setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+                                setToolTipText(h.getTooltip());
+                                repaint();
+                            }
+                            return;
+                        }
+                    }
+                }
+                if (hoveredHotspot != null) {
+                    hoveredHotspot = null;
+                    setCursor(Cursor.getDefaultCursor());
+                    setToolTipText(null);
+                    repaint();
+                } else if (activeDragHandle == DragHandle.NONE) {
+                    setCursor(Cursor.getDefaultCursor());
+                }
+            }
+
+            @Override
+            public void mouseExited(MouseEvent e) {
+                if (hoveredHotspot != null) {
+                    hoveredHotspot = null;
+                    setCursor(Cursor.getDefaultCursor());
+                    setToolTipText(null);
+                    repaint();
+                } else if (activeDragHandle == DragHandle.NONE) {
+                    setCursor(Cursor.getDefaultCursor());
+                }
             }
 
             @Override
             public void mouseReleased(MouseEvent e) {
                 if (isDragging) {
                     isDragging = false;
+                    if (activeDragHandle != DragHandle.NONE) {
+                        activeDragHandle = DragHandle.NONE;
+                        isActivationClick = false;
+                        repaint();
+                        return;
+                    }
                     if (client != null && client.getConnectionState().isFullSession()) {
                         ScreenBuffer sb = client.getScreenBuffer();
                         int ox = getRenderOffsetX();
@@ -290,7 +427,9 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                         row = Math.max(0, Math.min(row, displayRows - 1));
                         int clickAddr = row * displayCols + col;
 
-                        boolean isGraphic = client.getGocaDecoder() != null && client.getGocaDecoder().isGraphicsCursorActive() && client.getGraphicsPlane() != null;
+                        boolean isGraphic = client.getGocaDecoder() != null &&
+                            (client.getGocaDecoder().isGraphicsCursorActive() ||
+                             (client.getGraphicsPlane() != null && client.getGraphicsPlane().hasContent()));
 
                         if (isGraphic) {
                             clearSelection();
@@ -305,8 +444,11 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                             py = Math.max(0, Math.min(py, gHeight - 1));
                             client.getGocaDecoder().setGraphicCursorFromPixel(px, py);
 
+                            int gx = client.getGocaDecoder().getGraphicCursorX();
+                            int gy = client.getGocaDecoder().getGraphicCursorY();
                             int button = javax.swing.SwingUtilities.isRightMouseButton(e) ? 2 : 1;
                             client.getInputProcessor().sendGraphicMouseAid(
+                                gx, gy,
                                 haus.nightmare.lib3270j.protocol.DS3270Constants.AID_ENTER,
                                 button,
                                 e.isShiftDown(),
@@ -316,14 +458,65 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                             return;
                         }
 
-                        // Automatic Light-Pen / Selectable Field detection on mouse click:
+                        boolean wasDrag = (selectionStartRow != -1 && selectionEndRow != -1 &&
+                                          !(selectionStartRow == selectionEndRow && selectionStartCol == selectionEndCol));
+                        boolean activation = isActivationClick;
+                        isActivationClick = false;
+
+                        if (wasDrag) {
+                            // Preserve drag/block selection so user can interact with menus or press Ctrl+C
+                            repaint();
+                            return;
+                        }
+
+                        // Single click (not a drag):
+                        clearSelection();
+                        sb.setCursorAddress(clickAddr);
+
+                        // If this was an activation click (e.g. clicking to resume focus),
+                        // do not fire field actions or send AIDs
+                        if (activation) {
+                            refreshScreen();
+                            return;
+                        }
+
+                        // Phase 25.2: Interactive Hotspot click execution (URLs, PF keys, choices)
+                        if (hotspotsEnabled && client.getConnectionState().isFullSession()) {
+                            HotspotEngine.Hotspot h = hotspotEngine.findHotspot(row, col);
+                            if (h != null) {
+                                if (h.getType() == HotspotEngine.HotspotType.URL) {
+                                    openUrl(h.getAction());
+                                    return;
+                                } else {
+                                    client.getPS().SendKeys(h.getAction());
+                                    refreshScreen();
+                                    return;
+                                }
+                            }
+                        }
+
+                        // Automatic Light-Pen / Selectable Field detection on mouse click (HoD parity):
                         if (sb.isFormatted()) {
                             int faPos = sb.findFieldAttribute(clickAddr);
                             if (faPos >= 0) {
                                 int fa = sb.getCell(faPos).fa & 0xFF;
                                 if (haus.nightmare.lib3270j.protocol.DS3270Constants.faIsSelectable(fa) &&
                                     !haus.nightmare.lib3270j.protocol.DS3270Constants.faIsZero(fa)) {
-                                    clearSelection();
+                                    int size = displayRows * displayCols;
+                                    int desPos = (faPos + 1) % size;
+                                    char desAscii = (char) sb.getCell(desPos).ucs4;
+                                    int desEbcdic = sb.getCell(desPos).ec & 0xFF;
+
+                                    boolean isToggleField = (desEbcdic == 0x6F || desAscii == '?' || desAscii == '\uFF1F' ||
+                                                             desEbcdic == 0x6E || desAscii == '>' || desAscii == '\uFF1E');
+                                    boolean isEnterField = (desEbcdic == 0x50 || desAscii == '&' || desAscii == '\uFF06');
+                                    boolean isProtected = haus.nightmare.lib3270j.protocol.DS3270Constants.faIsProtected(fa);
+
+                                    boolean isDoubleClick = (e.getClickCount() >= 2);
+                                    // For detectable fields (FA bits 4-5 = 01 or 11):
+                                    // Double-clicking or invoking mnemonic [cursel] toggles the designator character (? -> >).
+                                    // If field has immediate select attribute, immediately transmit Cursor Select AID (0x7E).
+                                    if (lightPenMode || isDoubleClick || isToggleField || isEnterField || !isProtected) {
                                         if (client.lightPenSelect(clickAddr)) {
                                             refreshScreen();
                                             return;
@@ -331,10 +524,9 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                                     }
                                 }
                             }
+                        }
 
                         if (lightPenMode) {
-                            clearSelection();
-                            sb.setCursorAddress(clickAddr);
                             boolean result = client.lightPenSelect(clickAddr);
                             if (result) {
                                 refreshScreen();
@@ -344,13 +536,9 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                             }
                         }
 
-                        if (selectionStartRow == selectionEndRow && selectionStartCol == selectionEndCol) {
-                            sb.setCursorAddress(clickAddr);
-                            clearSelection();
                         refreshScreen();
                         return;
                     }
-                    }
                     repaint();
                 }
             }
@@ -358,6 +546,21 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         addMouseListener(mouseHandler);
         addMouseMotionListener(mouseHandler);
 
+        // Phase 25.2: Mouse wheel navigation (Wheel Up -> [pf7], Wheel Down -> [pf8])
+        addMouseWheelListener(e -> {
+            if (!mouseWheelEnabled || client == null || !client.getConnectionState().isFullSession()) {
+                return;
+            }
+            int rotation = e.getWheelRotation();
+            if (rotation < 0) {
+                client.getPS().SendKeys(mouseWheelUpAction);
+                refreshScreen();
+            } else if (rotation > 0) {
+                client.getPS().SendKeys(mouseWheelDownAction);
+                refreshScreen();
+            }
+        });
+
         // Handle resize: keep user configured font persistent without auto-fit reset
         addComponentListener(new ComponentAdapter() {
             @Override
@@ -368,8 +571,104 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         });
     }
 
+    // ========== Phase 25: Hotspot URL Opener ==========
+
+    private void openUrl(String url) {
+        if (url == null || url.trim().isEmpty()) return;
+        try {
+            if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
+                Desktop.getDesktop().browse(new java.net.URI(url));
+                return;
+            }
+        } catch (Exception ignored) {
+        }
+        // Fallback: command line launcher
+        try {
+            String os = System.getProperty("os.name").toLowerCase();
+            if (os.contains("win")) {
+                Runtime.getRuntime().exec(new String[]{"rundll32", "url.dll,FileProtocolHandler", url});
+            } else if (os.contains("mac")) {
+                Runtime.getRuntime().exec(new String[]{"open", url});
+            } else {
+                Runtime.getRuntime().exec(new String[]{"xdg-open", url});
+            }
+        } catch (Exception ex) {
+            Toolkit.getDefaultToolkit().beep();
+        }
+    }
+
+    public HotspotEngine getHotspotEngine() {
+        return hotspotEngine;
+    }
+
     // ========== Selection / Copy-Paste ==========
 
+    public boolean isBlockSelectMode() {
+        return blockSelectMode;
+    }
+
+    public void setBlockSelectMode(boolean val) {
+        this.blockSelectMode = val;
+        repaint();
+    }
+
+    public boolean isTrimRectSizingHandles() {
+        return trimRectSizingHandles;
+    }
+
+    public void setTrimRectSizingHandles(boolean val) {
+        this.trimRectSizingHandles = val;
+        repaint();
+    }
+
+    public DragHandle getDragHandleAt(int mx, int my) {
+        if (!hasSelection() || client == null) return DragHandle.NONE;
+        int ox = getRenderOffsetX();
+        int oy = getRenderOffsetY();
+        int r1 = Math.min(selectionStartRow, selectionEndRow);
+        int r2 = Math.max(selectionStartRow, selectionEndRow);
+        int c1 = Math.min(selectionStartCol, selectionEndCol);
+        int c2 = Math.max(selectionStartCol, selectionEndCol);
+
+        int x1 = ox + c1 * cellWidth;
+        int y1 = oy + r1 * cellHeight;
+        int x2 = ox + (c2 + 1) * cellWidth;
+        int y2 = oy + (r2 + 1) * cellHeight;
+        int xm = (x1 + x2) / 2;
+        int ym = (y1 + y2) / 2;
+
+        int tol = 6;
+        if (Math.abs(mx - x1) <= tol && Math.abs(my - y1) <= tol) return DragHandle.NW;
+        if (Math.abs(mx - xm) <= tol && Math.abs(my - y1) <= tol) return DragHandle.N;
+        if (Math.abs(mx - x2) <= tol && Math.abs(my - y1) <= tol) return DragHandle.NE;
+        if (Math.abs(mx - x2) <= tol && Math.abs(my - ym) <= tol) return DragHandle.E;
+        if (Math.abs(mx - x2) <= tol && Math.abs(my - y2) <= tol) return DragHandle.SE;
+        if (Math.abs(mx - xm) <= tol && Math.abs(my - y2) <= tol) return DragHandle.S;
+        if (Math.abs(mx - x1) <= tol && Math.abs(my - y2) <= tol) return DragHandle.SW;
+        if (Math.abs(mx - x1) <= tol && Math.abs(my - ym) <= tol) return DragHandle.W;
+
+        if (mx >= x1 && mx <= x2 && my >= y1 && my <= y2) {
+            return DragHandle.MOVE;
+        }
+
+        return DragHandle.NONE;
+    }
+
+    public Cursor getCursorForDragHandle(DragHandle handle) {
+        switch (handle) {
+            case NW: return Cursor.getPredefinedCursor(Cursor.NW_RESIZE_CURSOR);
+            case N:  return Cursor.getPredefinedCursor(Cursor.N_RESIZE_CURSOR);
+            case NE: return Cursor.getPredefinedCursor(Cursor.NE_RESIZE_CURSOR);
+            case E:  return Cursor.getPredefinedCursor(Cursor.E_RESIZE_CURSOR);
+            case SE: return Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR);
+            case S:  return Cursor.getPredefinedCursor(Cursor.S_RESIZE_CURSOR);
+            case SW: return Cursor.getPredefinedCursor(Cursor.SW_RESIZE_CURSOR);
+            case W:  return Cursor.getPredefinedCursor(Cursor.W_RESIZE_CURSOR);
+            case MOVE: return Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR);
+            default: return Cursor.getDefaultCursor();
+        }
+    }
+
     public void clearSelection() {
         selectionStartRow = -1;
         selectionStartCol = -1;
@@ -415,23 +714,30 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         int r2 = Math.max(selectionStartRow, selectionEndRow);
         int c1, c2;
 
-        if (blockSelectMode) {
+        if (blockSelectMode || trimRectSizingHandles) {
             c1 = Math.min(selectionStartCol, selectionEndCol);
             c2 = Math.max(selectionStartCol, selectionEndCol);
 
             StringBuilder result = new StringBuilder();
             for (int r = r1; r <= r2; r++) {
                 if (r > r1) result.append('\n');
+                StringBuilder line = new StringBuilder();
                 for (int c = c1; c <= c2; c++) {
                     int baddr = r * cols + c;
                     ExtendedAttribute ea = sb.getCell(baddr);
                     char ch = ea.ucs4;
                     if (ea.isFieldAttribute() || ch <= 0x20 || ch == 0xFF) {
-                        result.append(' ');
+                        line.append(' ');
                     } else {
-                        result.append(ch);
+                        line.append(ch);
                     }
                 }
+                // Trim trailing whitespace on copied lines per HoD CutPasteOptions
+                int end = line.length();
+                while (end > 0 && line.charAt(end - 1) == ' ') {
+                    end--;
+                }
+                result.append(line.substring(0, end));
             }
             return result.toString();
         } else {
@@ -446,21 +752,34 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
             }
 
             StringBuilder result = new StringBuilder();
+            StringBuilder line = new StringBuilder();
             int prevRow = startAddr / cols;
             for (int addr = startAddr; addr <= endAddr; addr++) {
                 int curRow = addr / cols;
                 if (curRow != prevRow) {
-                    result.append('\n');
+                    int end = line.length();
+                    while (end > 0 && line.charAt(end - 1) == ' ') {
+                        end--;
+                    }
+                    if (result.length() > 0) result.append('\n');
+                    result.append(line.substring(0, end));
+                    line.setLength(0);
                     prevRow = curRow;
                 }
                 ExtendedAttribute ea = sb.getCell(addr);
                 char ch = ea.ucs4;
                 if (ea.isFieldAttribute() || ch <= 0x20 || ch == 0xFF) {
-                    result.append(' ');
+                    line.append(' ');
                 } else {
-                    result.append(ch);
+                    line.append(ch);
                 }
             }
+            int end = line.length();
+            while (end > 0 && line.charAt(end - 1) == ' ') {
+                end--;
+            }
+            if (result.length() > 0) result.append('\n');
+            result.append(line.substring(0, end));
             return result.toString();
         }
     }
@@ -471,6 +790,65 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
             StringSelection ss = new StringSelection(text);
             Toolkit.getDefaultToolkit().getSystemClipboard().setContents(ss, null);
         }
+        if (!haus.nightmare.j3270.config.Settings.getTrimRectRemainAfterEdit()) {
+            clearSelection();
+            repaint();
+        }
+    }
+
+    public void cutSelection() {
+        if (!hasSelection() || client == null || !client.getConnectionState().isFullSession()) return;
+        String text = getSelectedText();
+        if (!text.isEmpty()) {
+            StringSelection ss = new StringSelection(text);
+            Toolkit.getDefaultToolkit().getSystemClipboard().setContents(ss, null);
+        }
+        ScreenBuffer sb = client.getScreenBuffer();
+        int cols = sb.getCols();
+        int r1 = Math.min(selectionStartRow, selectionEndRow);
+        int r2 = Math.max(selectionStartRow, selectionEndRow);
+        int c1 = Math.min(selectionStartCol, selectionEndCol);
+        int c2 = Math.max(selectionStartCol, selectionEndCol);
+
+        if (blockSelectMode || trimRectSizingHandles) {
+            for (int r = r1; r <= r2; r++) {
+                for (int c = c1; c <= c2; c++) {
+                    int baddr = r * cols + c;
+                    if (!sb.isProtected(baddr) && !sb.getCell(baddr).isFieldAttribute()) {
+                        ExtendedAttribute ea = sb.getCell(baddr);
+                        ea.ucs4 = ' ';
+                        ea.ec = (byte) 0x40;
+                        if (sb.isFormatted()) {
+                            int faAddr = sb.findFieldAttribute(baddr);
+                            if (faAddr >= 0) {
+                                sb.getCell(faAddr).fa = (byte) (sb.getCell(faAddr).fa | haus.nightmare.lib3270j.protocol.DS3270Constants.FA_MODIFY);
+                            }
+                        }
+                    }
+                }
+            }
+        } else {
+            int startAddr = Math.min(selectionStartRow * cols + selectionStartCol, selectionEndRow * cols + selectionEndCol);
+            int endAddr = Math.max(selectionStartRow * cols + selectionStartCol, selectionEndRow * cols + selectionEndCol);
+            for (int baddr = startAddr; baddr <= endAddr; baddr++) {
+                if (!sb.isProtected(baddr) && !sb.getCell(baddr).isFieldAttribute()) {
+                    ExtendedAttribute ea = sb.getCell(baddr);
+                    ea.ucs4 = ' ';
+                    ea.ec = (byte) 0x40;
+                    if (sb.isFormatted()) {
+                        int faAddr = sb.findFieldAttribute(baddr);
+                        if (faAddr >= 0) {
+                            sb.getCell(faAddr).fa = (byte) (sb.getCell(faAddr).fa | haus.nightmare.lib3270j.protocol.DS3270Constants.FA_MODIFY);
+                        }
+                    }
+                }
+            }
+        }
+        sb.updateDisplaySnapshot();
+        if (!haus.nightmare.j3270.config.Settings.getTrimRectRemainAfterEdit()) {
+            clearSelection();
+        }
+        refreshScreen();
     }
 
     public void pasteClipboard() {
@@ -496,11 +874,18 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                 int curCol = cols > 0 ? curPos % cols : 0;
                 boolean excelPaste = haus.nightmare.j3270.config.Settings.getEnablePasteFromExcel();
                 boolean stopAtProtected = haus.nightmare.j3270.config.Settings.getPasteStopAtProtectedLine();
+                boolean blockPaste = haus.nightmare.j3270.config.Settings.getBlockPaste();
+                boolean wordBreak = haus.nightmare.j3270.config.Settings.getPasteWordBreak();
 
-                if (client.getInputProcessor() != null && (excelPaste || stopAtProtected || text.contains("\t") || text.contains("\n") || text.contains("\r"))) {
+                if (client.getInputProcessor() != null && (excelPaste || stopAtProtected || blockPaste || wordBreak || text.contains("\t") || text.contains("\n") || text.contains("\r"))) {
-                    client.getInputProcessor().pasteText(text, excelPaste, stopAtProtected);
+                    client.getInputProcessor().pasteText(text, excelPaste, stopAtProtected, blockPaste, wordBreak);
                 } else if (client.getPS() != null) {
+                    client.getPS().setPasteWordBreak(wordBreak);
+                    if (blockPaste) {
+                        client.getPS().pasteRectangular(text, curRow, curCol);
+                    } else {
                         client.getPS().pasteString(text, curRow, curCol);
+                    }
                 } else {
                     for (char ch : text.toCharArray()) {
                         if (ch == '\n' || ch == '\r') {
@@ -511,6 +896,9 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                         }
                     }
                 }
+                if (!haus.nightmare.j3270.config.Settings.getTrimRectRemainAfterEdit() && hasSelection()) {
+                    clearSelection();
+                }
                 refreshScreen();
             }
         } catch (Exception ignored) {}
@@ -548,6 +936,12 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         JPopupMenu popup = new JPopupMenu();
         ThemeManager.stylePopupMenu(popup);
 
+        JMenuItem cutItem = new JMenuItem("Cut");
+        ThemeManager.styleMenuItem(cutItem);
+        cutItem.setEnabled(hasSelection() && client != null && client.getConnectionState().isFullSession());
+        cutItem.addActionListener(ev -> cutSelection());
+        popup.add(cutItem);
+
         JMenuItem copyItem = new JMenuItem("Copy");
         ThemeManager.styleMenuItem(copyItem);
         copyItem.setEnabled(hasSelection());
@@ -575,6 +969,23 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         });
         popup.add(blockModeItem);
 
+        JCheckBoxMenuItem blockPasteItem = new JCheckBoxMenuItem("Block Paste", haus.nightmare.j3270.config.Settings.getBlockPaste());
+        ThemeManager.styleMenuItem(blockPasteItem);
+        blockPasteItem.addActionListener(ev -> {
+            haus.nightmare.j3270.config.Settings.setBlockPaste(blockPasteItem.isSelected());
+            applyModeSettings();
+        });
+        popup.add(blockPasteItem);
+
+        JCheckBoxMenuItem handlesItem = new JCheckBoxMenuItem("Trim Sizing Handles", trimRectSizingHandles);
+        ThemeManager.styleMenuItem(handlesItem);
+        handlesItem.addActionListener(ev -> {
+            trimRectSizingHandles = handlesItem.isSelected();
+            haus.nightmare.j3270.config.Settings.setTrimRectSizingHandles(trimRectSizingHandles);
+            repaint();
+        });
+        popup.add(handlesItem);
+
         popup.show(this, e.getX(), e.getY());
     }
 
@@ -584,7 +995,7 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         int r1 = Math.min(selectionStartRow, selectionEndRow);
         int r2 = Math.max(selectionStartRow, selectionEndRow);
 
-        if (blockSelectMode) {
+        if (blockSelectMode || trimRectSizingHandles) {
             int c1 = Math.min(selectionStartCol, selectionEndCol);
             int c2 = Math.max(selectionStartCol, selectionEndCol);
             return row >= r1 && row <= r2 && col >= c1 && col <= c2;
@@ -686,9 +1097,11 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         bindKeyToMap(im, "APL", haus.nightmare.j3270.config.Settings.getKeyBinding("APL", "alt F3"));
 
         // Copy/Paste/Lightpen bindings
+        String defCut = haus.nightmare.j3270.config.Settings.isMac() ? "meta X, ctrl X" : "ctrl X, shift DELETE";
         String defCopy = haus.nightmare.j3270.config.Settings.getDefaultBinding("COPY");
         String defPaste = haus.nightmare.j3270.config.Settings.getDefaultBinding("PASTE");
         String defSelectAll = haus.nightmare.j3270.config.Settings.getDefaultBinding("SELECTALL");
+        bindKeyToMap(im, "CUT", haus.nightmare.j3270.config.Settings.getKeyBinding("CUT", defCut));
         bindKeyToMap(im, "COPY", haus.nightmare.j3270.config.Settings.getKeyBinding("COPY", defCopy));
         bindKeyToMap(im, "PASTE", haus.nightmare.j3270.config.Settings.getKeyBinding("PASTE", defPaste));
         bindKeyToMap(im, "SELECTALL", haus.nightmare.j3270.config.Settings.getKeyBinding("SELECTALL", defSelectAll));
@@ -725,6 +1138,7 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         am.put("j3270-SYSREQ", createAction(this::handleSysReq));
         am.put("j3270-CURSEL", createAction(this::handleCursorSelect));
 
+        am.put("j3270-CUT", createAction(this::cutSelection));
         am.put("j3270-COPY", createAction(this::copySelection));
         am.put("j3270-PASTE", createAction(this::pasteClipboard));
         am.put("j3270-SELECTALL", createAction(this::selectAll));
@@ -1179,10 +1593,12 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                 ip.setInsertOffOnAid(haus.nightmare.j3270.config.Settings.getInsertOffOnAid());
                 ip.setNumericFieldLock(haus.nightmare.j3270.config.Settings.getNumericFieldLock());
                 ip.setAutoSkipEnabled(haus.nightmare.j3270.config.Settings.getAutoSkipEnabled());
+                ip.setBlockPaste(haus.nightmare.j3270.config.Settings.getBlockPaste());
             }
             if (client.getPS() != null) {
                 client.getPS().setEnablePasteFromExcel(haus.nightmare.j3270.config.Settings.getEnablePasteFromExcel());
                 client.getPS().setPasteStopAtProtectedLine(haus.nightmare.j3270.config.Settings.getPasteStopAtProtectedLine());
+                client.getPS().setBlockPaste(haus.nightmare.j3270.config.Settings.getBlockPaste());
             }
         }
         if (statusBar != null) {
@@ -1238,13 +1654,45 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         setupFont();
         applyModeSettings();
         blockSelectMode = haus.nightmare.j3270.config.Settings.getBlockSelectMode();
+        trimRectSizingHandles = haus.nightmare.j3270.config.Settings.getTrimRectSizingHandles();
         crosshairRulerEnabled = haus.nightmare.j3270.config.Settings.getCrosshairRuler();
+        inputMaskEnabled = haus.nightmare.j3270.config.Settings.getInputMask();
+        inputMaskChar = haus.nightmare.j3270.config.Settings.getInputMaskChar();
         String cStyle = haus.nightmare.j3270.config.Settings.getCursorStyle();
         cursorStyle = "UNDERLINE".equalsIgnoreCase(cStyle) ? CursorStyle.UNDERLINE : CursorStyle.BLOCK;
+
+        // Phase 25: Reload Hotspots and Mouse Wheel preferences
+        hotspotsEnabled = haus.nightmare.j3270.config.Settings.getHotspotsEnabled();
+        hotspotEngine.setUrlEnabled(haus.nightmare.j3270.config.Settings.getHotspotsUrlEnabled());
+        hotspotEngine.setPfKeyEnabled(haus.nightmare.j3270.config.Settings.getHotspotsPfEnabled());
+        hotspotEngine.setMenuChoiceEnabled(haus.nightmare.j3270.config.Settings.getHotspotsMenuChoicesEnabled());
+        hotspotEngine.invalidateCache();
+        mouseWheelEnabled = haus.nightmare.j3270.config.Settings.getMouseWheelEnabled();
+        mouseWheelUpAction = haus.nightmare.j3270.config.Settings.getMouseWheelUpKey();
+        mouseWheelDownAction = haus.nightmare.j3270.config.Settings.getMouseWheelDownKey();
+
         revalidate();
         repaint();
     }
 
+    public boolean isInputMaskEnabled() {
+        return inputMaskEnabled;
+    }
+
+    public void setInputMaskEnabled(boolean enabled) {
+        this.inputMaskEnabled = enabled;
+        repaint();
+    }
+
+    public String getInputMaskChar() {
+        return inputMaskChar;
+    }
+
+    public void setInputMaskChar(String maskChar) {
+        this.inputMaskChar = maskChar;
+        repaint();
+    }
+
     public void setFontSize(int size) {
         currentFontSize = size;
         haus.nightmare.j3270.config.Settings.setFontSize(size);
@@ -1272,7 +1720,41 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         blinkTimer = new Timer(500, e -> {
             cursorVisible = !cursorVisible;
             textBlinkVisible = !textBlinkVisible;
+
+            // Check if there are any blinking cells or fields on the screen
+            boolean hasBlinkingCells = false;
+            ScreenBuffer sb = (client != null) ? client.getScreenBuffer() : null;
+            if (sb != null) {
+                int total = sb.getDisplayRows() * sb.getDisplayCols();
+                byte curFaGr = 0;
+                for (int i = 0; i < total; i++) {
+                    ExtendedAttribute c = sb.getDisplayCell(i);
+                    if (c.isFieldAttribute()) {
+                        curFaGr = c.gr;
+                    }
+                    if ((c.gr & ExtendedAttribute.GR_BLINK) != 0 || (curFaGr & ExtendedAttribute.GR_BLINK) != 0) {
+                        hasBlinkingCells = true;
+                        break;
+                    }
+                }
+            }
+
+            if (hasBlinkingCells) {
                 repaint();
+            } else if (sb != null && client != null && client.getConnectionState() != null && client.getConnectionState().isFullSession()) {
+                // Only repaint the cursor cell bounding rect
+                int cols = sb.getDisplayCols();
+                int ox = getRenderOffsetX();
+                int oy = getRenderOffsetY();
+                int curAddr = sb.getDisplayCursorAddress();
+                int curRow = curAddr / cols;
+                int curCol = curAddr % cols;
+                int cx = ox + curCol * cellWidth;
+                int cy = oy + curRow * cellHeight;
+                repaint(cx, cy, cellWidth, cellHeight);
+            } else {
+                repaint();
+            }
         });
         blinkTimer.start();
     }
@@ -1527,13 +2009,19 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
 
                 // Password fields
                 if (faIsZero(currentFA & 0xFF)) {
+                    if (inputMaskEnabled) {
                         char ch = ea.ucs4;
                         if (ch > 0x20 && ch != 0xFF) {
                             Font f = bold ? boldTerminalFont : terminalFont;
                             g2.setFont(f);
                             g2.setColor(fgColor);
-                        g2.drawString("*", x, y + fontAscent);
+                            String mask = (inputMaskChar != null && !inputMaskChar.isEmpty()) ? inputMaskChar : "*";
+                            g2.drawString(mask, x, y + fontAscent);
                         }
+                    }
+
+                    // Field Outlining (0xC2 / TY_FOUTLINE)
+                    drawOutlining(g2, ea, currentFieldEa, baddr, row, col, x, y, cellWidth, cellHeight, rows, cols, sb, fgColor);
 
                     if (isCellSelected(row, col)) {
                         g2.setColor(SELECTION_COLOR);
@@ -1554,7 +2042,7 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                 }
 
                 // Check text blink (500ms cycle)
-                boolean blink = (gr & GR_BLINK) != 0;
+                boolean blink = (gr & GR_BLINK) != 0 || (currentFieldEa != null && (currentFieldEa.gr & GR_BLINK) != 0);
                 boolean suppressGlyph = blink && !textBlinkVisible;
 
                 // Draw character or Programmed Symbol
@@ -1588,12 +2076,15 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
                     }
                 }
 
-                if (underline) {
+                if (underline && !suppressGlyph) {
                     g2.setColor(fgColor);
                     int ulY = Math.min(y + cellHeight - 1, y + fontAscent + Math.max(0, (cellHeight - (fontAscent + fontDescent)) / 2) + 2);
                     g2.drawLine(x, ulY, x + cellWidth - 1, ulY);
                 }
 
+                // Field Outlining (0xC2 / TY_FOUTLINE)
+                drawOutlining(g2, ea, currentFieldEa, baddr, row, col, x, y, cellWidth, cellHeight, rows, cols, sb, fgColor);
+
                 // Draw search highlight
                 if (isCellSearchHighlighted(row, col)) {
                     g2.setColor(SEARCH_HIGHLIGHT_COLOR);
@@ -1608,6 +2099,63 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
             }
         }
 
+        // Phase 26.1: Rectangular Block Selection Sizing Handles & Box Outline
+        if (trimRectSizingHandles && hasSelection() && client != null && client.getConnectionState().isFullSession()) {
+            int r1 = Math.min(selectionStartRow, selectionEndRow);
+            int r2 = Math.max(selectionStartRow, selectionEndRow);
+            int c1 = Math.min(selectionStartCol, selectionEndCol);
+            int c2 = Math.max(selectionStartCol, selectionEndCol);
+
+            int x1 = ox + c1 * cellWidth;
+            int y1 = oy + r1 * cellHeight;
+            int x2 = ox + (c2 + 1) * cellWidth;
+            int y2 = oy + (r2 + 1) * cellHeight;
+            int w = x2 - x1;
+            int h = y2 - y1;
+            int xm = (x1 + x2) / 2;
+            int ym = (y1 + y2) / 2;
+
+            Color oldColor = g2.getColor();
+            Stroke oldStroke = g2.getStroke();
+
+            g2.setColor(Color.YELLOW);
+            g2.drawRect(x1, y1, w, h);
+
+            drawSizingHandle(g2, x1, y1);
+            drawSizingHandle(g2, xm, y1);
+            drawSizingHandle(g2, x2, y1);
+            drawSizingHandle(g2, x2, ym);
+            drawSizingHandle(g2, x2, y2);
+            drawSizingHandle(g2, xm, y2);
+            drawSizingHandle(g2, x1, y2);
+            drawSizingHandle(g2, x1, ym);
+
+            g2.setStroke(oldStroke);
+            g2.setColor(oldColor);
+        }
+
+        // Phase 25.2: Draw visual underline on hovered hotspot
+        if (hotspotsEnabled && hoveredHotspot != null) {
+            Color oldColor = g2.getColor();
+            Stroke oldStroke = g2.getStroke();
+            g2.setColor(new Color(0, 220, 255)); // Bright cyan hotspot underline
+            g2.setStroke(new BasicStroke(2.0f));
+
+            int hr0 = hoveredHotspot.getStartRow();
+            int hr1 = hoveredHotspot.getEndRow();
+            for (int r = hr0; r <= hr1; r++) {
+                int c0 = (r == hr0) ? hoveredHotspot.getStartCol() : 0;
+                int c1 = (r == hr1) ? hoveredHotspot.getEndCol() : cols - 1;
+                int x1 = ox + c0 * cellWidth;
+                int x2 = ox + (c1 + 1) * cellWidth;
+                int ulY = oy + r * cellHeight + fontAscent + Math.max(0, (cellHeight - (fontAscent + fontDescent)) / 2) + 2;
+                ulY = Math.min(oy + (r + 1) * cellHeight - 1, ulY);
+                g2.drawLine(x1, ulY, x2 - 1, ulY);
+            }
+            g2.setStroke(oldStroke);
+            g2.setColor(oldColor);
+        }
+
         // Draw Graphic Cursor if active
         boolean isGraphicCursor = (client.getGocaDecoder() != null && client.getGocaDecoder().isGraphicsCursorActive())
                 || (client.getGraphicsPlane() != null && client.getGraphicsPlane().isGraphicCursorAttached());
@@ -1761,6 +2309,64 @@ public class TerminalPanel extends JPanel implements java.awt.print.Printable {
         return faIsHigh(fa & 0xFF) ? monoIntensify : monoNormal;
     }
 
+    /**
+     * Render field outline lines around cells based on ea.ol or field attribute outline.
+     * Conforms to IBM 3270 Extended Data Stream / Host On-Demand DS3270 TY_FOUTLINE (0xC2).
+     *
+     * Bit 0 (0x01): Underline -> draw line at y + cellHeight - 1
+     * Bit 1 (0x02): Right vertical line -> draw line at x + cellWidth - 1
+     * Bit 2 (0x04): Overline -> draw line at y
+     * Bit 3 (0x08): Left vertical line -> draw line at x
+     */
+    private void drawOutlining(Graphics2D g2, ExtendedAttribute ea, ExtendedAttribute currentFieldEa,
+                              int baddr, int row, int col, int x, int y,
+                              int cellWidth, int cellHeight, int rows, int cols,
+                              ScreenBuffer sb, Color fgColor) {
+        int outline = ea.ol & 0xFF;
+        if (outline == 0 && currentFieldEa != null && currentFieldEa.ol != 0) {
+            int fol = currentFieldEa.ol & 0xFF;
+            if ((fol & ExtendedAttribute.OL_UNDERLINE) != 0) outline |= ExtendedAttribute.OL_UNDERLINE;
+            if ((fol & ExtendedAttribute.OL_OVERLINE) != 0) outline |= ExtendedAttribute.OL_OVERLINE;
+
+            int size = rows * cols;
+            int prevAddr = (baddr - 1 + size) % size;
+            if (sb.getDisplayCell(prevAddr).isFieldAttribute() || col == 0) {
+                if ((fol & ExtendedAttribute.OL_LEFT) != 0) outline |= ExtendedAttribute.OL_LEFT;
+            }
+            int nextAddr = (baddr + 1) % size;
+            if (sb.getDisplayCell(nextAddr).isFieldAttribute() || col == cols - 1) {
+                if ((fol & ExtendedAttribute.OL_RIGHT) != 0) outline |= ExtendedAttribute.OL_RIGHT;
+            }
+        }
+
+        if (outline != 0) {
+            g2.setColor(fgColor);
+            // Bit 0 (0x01): Underline -> draw line at y + cellHeight - 1
+            if ((outline & ExtendedAttribute.OL_UNDERLINE) != 0) {
+                g2.drawLine(x, y + cellHeight - 1, x + cellWidth - 1, y + cellHeight - 1);
+            }
+            // Bit 1 (0x02): Right vertical line -> draw line at x + cellWidth - 1
+            if ((outline & ExtendedAttribute.OL_RIGHT) != 0) {
+                g2.drawLine(x + cellWidth - 1, y, x + cellWidth - 1, y + cellHeight - 1);
+            }
+            // Bit 2 (0x04): Overline -> draw line at y
+            if ((outline & ExtendedAttribute.OL_OVERLINE) != 0) {
+                g2.drawLine(x, y, x + cellWidth - 1, y);
+            }
+            // Bit 3 (0x08): Left vertical line -> draw line at x
+            if ((outline & ExtendedAttribute.OL_LEFT) != 0) {
+                g2.drawLine(x, y, x, y + cellHeight - 1);
+            }
+        }
+    }
+
+    private void drawSizingHandle(Graphics2D g2, int cx, int cy) {
+        g2.setColor(Color.YELLOW);
+        g2.fillRect(cx - 2, cy - 2, 5, 5);
+        g2.setColor(Color.BLACK);
+        g2.drawRect(cx - 2, cy - 2, 5, 5);
+    }
+
     public void dispose() {
         if (blinkTimer != null)
             blinkTimer.stop();

j3270/src/main/java/haus/nightmare/j3270/ui/ThemeManager.java

@@ -20,6 +20,7 @@ import java.awt.event.MouseEvent;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.function.Consumer;
+import haus.nightmare.j3270.config.Settings;
 
 /**
  * Centralized theme manager for j3270 Java desktop UI.
@@ -33,6 +34,25 @@ public final class ThemeManager {
 
     private ThemeManager() {}
 
+    public static Font getUiFont() {
+        return getUiFont(Font.PLAIN, 0);
+    }
+
+    public static Font getUiFont(int style, int sizeDelta) {
+        String family = Settings.getUiFontFamily();
+        int size = Math.max(8, Settings.getUiFontSize() + sizeDelta);
+        return new Font(family, style, size);
+    }
+
+    public static Font getMonospacedUiFont() {
+        return getMonospacedUiFont(Font.PLAIN, 0);
+    }
+
+    public static Font getMonospacedUiFont(int style, int sizeDelta) {
+        int size = Math.max(8, Settings.getUiFontSize() + sizeDelta);
+        return new Font(Font.MONOSPACED, style, size);
+    }
+
     public static UITheme getTheme() {
         return currentTheme;
     }
@@ -433,6 +453,47 @@ public final class ThemeManager {
         UIManager.put("TitledBorder.titleColor", fgMain);
         UIManager.put("OptionPane.background", bgPanel);
         UIManager.put("OptionPane.messageForeground", fgMain);
+
+        // UI Font Defaults
+        Font uiFont = getUiFont();
+        Font uiFontBold = getUiFont(Font.BOLD, 0);
+        Font monoUiFont = getMonospacedUiFont();
+
+        UIManager.put("Button.font", uiFont);
+        UIManager.put("ToggleButton.font", uiFont);
+        UIManager.put("RadioButton.font", uiFont);
+        UIManager.put("CheckBox.font", uiFont);
+        UIManager.put("ColorChooser.font", uiFont);
+        UIManager.put("ComboBox.font", uiFont);
+        UIManager.put("Label.font", uiFont);
+        UIManager.put("List.font", uiFont);
+        UIManager.put("MenuBar.font", uiFont);
+        UIManager.put("MenuItem.font", uiFont);
+        UIManager.put("RadioButtonMenuItem.font", uiFont);
+        UIManager.put("CheckBoxMenuItem.font", uiFont);
+        UIManager.put("Menu.font", uiFont);
+        UIManager.put("PopupMenu.font", uiFont);
+        UIManager.put("OptionPane.font", uiFont);
+        UIManager.put("OptionPane.messageFont", uiFont);
+        UIManager.put("OptionPane.buttonFont", uiFont);
+        UIManager.put("Panel.font", uiFont);
+        UIManager.put("ProgressBar.font", uiFont);
+        UIManager.put("ScrollPane.font", uiFont);
+        UIManager.put("Viewport.font", uiFont);
+        UIManager.put("TabbedPane.font", uiFont);
+        UIManager.put("Table.font", uiFont);
+        UIManager.put("TableHeader.font", uiFontBold);
+        UIManager.put("TextField.font", uiFont);
+        UIManager.put("PasswordField.font", uiFont);
+        UIManager.put("TextArea.font", monoUiFont);
+        UIManager.put("TextPane.font", uiFont);
+        UIManager.put("EditorPane.font", uiFont);
+        UIManager.put("TitledBorder.font", uiFontBold);
+        UIManager.put("ToolBar.font", uiFont);
+        UIManager.put("ToolTip.font", uiFont);
+        UIManager.put("Tree.font", uiFont);
+        UIManager.put("Spinner.font", uiFont);
+        UIManager.put("FormattedTextField.font", uiFont);
     }
 
     // =========================================================================
@@ -446,6 +507,7 @@ public final class ThemeManager {
     public static JButton styleButton(JButton button, ButtonVariant variant) {
         if (button == null) return null;
         button.setUI(new StyledButtonUI(variant));
+        button.setFont(getUiFont());
         button.setFocusPainted(false);
         button.setOpaque(false);
         button.setContentAreaFilled(false);
@@ -465,6 +527,7 @@ public final class ThemeManager {
 
     public static JTextField styleTextField(JTextField field) {
         if (field == null) return null;
+        field.setFont(getUiFont());
         field.setBackground(getBgComponent());
         field.setForeground(getFgMain());
         field.setCaretColor(getFgMain());
@@ -478,6 +541,7 @@ public final class ThemeManager {
 
     public static JTextArea styleTextArea(JTextArea area) {
         if (area == null) return null;
+        area.setFont(getMonospacedUiFont());
         area.setBackground(getCodeAreaBg());
         area.setForeground(getCodeAreaFg());
         area.setCaretColor(getFgMain());
@@ -488,6 +552,7 @@ public final class ThemeManager {
 
     public static JComboBox<?> styleComboBox(JComboBox<?> box) {
         if (box == null) return null;
+        box.setFont(getUiFont());
         box.setBackground(getBgComponent());
         box.setForeground(getFgMain());
         box.setRenderer(new DefaultListCellRenderer() {
@@ -510,12 +575,14 @@ public final class ThemeManager {
 
     public static JTable styleTable(JTable table) {
         if (table == null) return null;
+        table.setFont(getUiFont());
         table.setBackground(getBgComponent());
         table.setForeground(getFgMain());
         table.setSelectionBackground(getSelectionBg());
         table.setSelectionForeground(getSelectionFg());
         table.setGridColor(getTableGrid());
-        table.setRowHeight(24);
+        int rowHeight = Math.max(24, getUiFont().getSize() + 10);
+        table.setRowHeight(rowHeight);
 
         table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
             @Override
@@ -537,14 +604,14 @@ public final class ThemeManager {
         if (header != null) {
             header.setBackground(getTableHeaderBg());
             header.setForeground(getTableHeaderFg());
-            header.setFont(header.getFont().deriveFont(Font.BOLD));
+            header.setFont(getUiFont(Font.BOLD, 0));
             header.setDefaultRenderer(new DefaultTableCellRenderer() {
                 @Override
                 public Component getTableCellRendererComponent(JTable tbl, Object val, boolean isSel, boolean hasFocus, int row, int col) {
                     super.getTableCellRendererComponent(tbl, val, isSel, hasFocus, row, col);
                     setBackground(getTableHeaderBg());
                     setForeground(getTableHeaderFg());
-                    setFont(getFont().deriveFont(Font.BOLD));
+                    setFont(getUiFont(Font.BOLD, 0));
                     setBorder(BorderFactory.createCompoundBorder(
                             BorderFactory.createMatteBorder(0, 0, 1, 1, getBorderColor()),
                             new EmptyBorder(4, 6, 4, 6)));
@@ -558,6 +625,7 @@ public final class ThemeManager {
     public static JTabbedPane styleTabbedPane(JTabbedPane tp) {
         if (tp == null) return null;
         tp.setUI(new StyledTabbedPaneUI());
+        tp.setFont(getUiFont());
         tp.setBackground(getBgMain());
         tp.setForeground(getFgMain());
         return tp;
@@ -566,6 +634,7 @@ public final class ThemeManager {
     public static JMenuBar styleMenuBar(JMenuBar bar) {
         if (bar == null) return null;
         bar.setUI(new StyledMenuBarUI());
+        bar.setFont(getUiFont());
         bar.setBackground(getMenuBarBg());
         bar.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, getBorder()));
         return bar;
@@ -574,6 +643,7 @@ public final class ThemeManager {
     public static JMenu styleMenu(JMenu menu) {
         if (menu == null) return null;
         menu.setUI(new StyledMenuUI());
+        menu.setFont(getUiFont());
         menu.setForeground(getMenuBarFg());
         menu.setBackground(getMenuBarBg());
         menu.setOpaque(false);
@@ -583,6 +653,7 @@ public final class ThemeManager {
     public static JMenuItem styleMenuItem(JMenuItem item) {
         if (item == null) return null;
         item.setUI(new StyledMenuItemUI());
+        item.setFont(getUiFont());
         item.setBackground(getMenuPopupBg());
         item.setForeground(getMenuItemFg());
         return item;
@@ -591,6 +662,7 @@ public final class ThemeManager {
     public static JPopupMenu stylePopupMenu(JPopupMenu popup) {
         if (popup == null) return null;
         popup.setUI(new StyledPopupMenuUI());
+        popup.setFont(getUiFont());
         popup.setBackground(getMenuPopupBg());
         popup.setBorder(BorderFactory.createCompoundBorder(
                 new LineBorder(getBorder(), 1),
@@ -610,12 +682,14 @@ public final class ThemeManager {
 
     public static JSpinner styleSpinner(JSpinner sp) {
         if (sp == null) return null;
+        sp.setFont(getUiFont());
         sp.setBackground(getBgComponent());
         sp.setForeground(getFgMain());
         sp.setBorder(new LineBorder(getBorder(), 1));
         JComponent editor = sp.getEditor();
         if (editor instanceof JSpinner.DefaultEditor) {
             JTextField tf = ((JSpinner.DefaultEditor) editor).getTextField();
+            tf.setFont(getUiFont());
             tf.setBackground(getBgComponent());
             tf.setForeground(getFgMain());
             tf.setCaretColor(getFgMain());
@@ -626,6 +700,7 @@ public final class ThemeManager {
 
     public static JCheckBox styleCheckBox(JCheckBox cb) {
         if (cb == null) return null;
+        cb.setFont(getUiFont());
         cb.setOpaque(false);
         cb.setForeground(getFgMain());
         cb.setFocusPainted(false);
@@ -634,6 +709,7 @@ public final class ThemeManager {
 
     public static JRadioButton styleRadioButton(JRadioButton rb) {
         if (rb == null) return null;
+        rb.setFont(getUiFont());
         rb.setOpaque(false);
         rb.setForeground(getFgMain());
         rb.setFocusPainted(false);
@@ -646,7 +722,7 @@ public final class ThemeManager {
                 title,
                 TitledBorder.DEFAULT_JUSTIFICATION,
                 TitledBorder.DEFAULT_POSITION,
-                new Font(Font.SANS_SERIF, Font.BOLD, 12),
+                getUiFont(Font.BOLD, 0),
                 getFgMain());
     }
 
@@ -732,6 +808,7 @@ public final class ThemeManager {
 
         if (comp instanceof JButton) {
             JButton btn = (JButton) comp;
+            btn.setFont(getUiFont());
             if (!(btn.getUI() instanceof StyledButtonUI)) {
                 styleButton(btn, ButtonVariant.DEFAULT);
             }
@@ -770,6 +847,21 @@ public final class ThemeManager {
 
         if (comp instanceof JLabel) {
             comp.setForeground(getFgMain(theme));
+            JLabel label = (JLabel) comp;
+            Font cur = label.getFont();
+            int style = (cur != null && cur.isBold()) ? Font.BOLD : Font.PLAIN;
+            Object deltaProp = label.getClientProperty("uiFontSizeDelta");
+            int delta = 0;
+            if (deltaProp instanceof Integer) {
+                delta = (Integer) deltaProp;
+            } else {
+                int baseSize = Settings.getUiFontSize();
+                if (cur != null && cur.getSize() > baseSize) {
+                    delta = cur.getSize() - baseSize;
+                }
+                label.putClientProperty("uiFontSizeDelta", delta);
+            }
+            label.setFont(getUiFont(style, delta));
             return;
         }
 
@@ -783,6 +875,7 @@ public final class ThemeManager {
             if (b instanceof TitledBorder) {
                 TitledBorder tb = (TitledBorder) b;
                 tb.setTitleColor(getFgMain(theme));
+                tb.setTitleFont(getUiFont(Font.BOLD, 0));
                 tb.setBorder(new LineBorder(getBorder(theme), 1));
             }
         } else if (comp instanceof Container) {

j3270/src/main/java/haus/nightmare/j3270/ui/UntrustedCertificateDialog.java

@@ -17,6 +17,7 @@ public class UntrustedCertificateDialog extends JDialog {
 
     public UntrustedCertificateDialog(Frame parent, String host, int port, X509Certificate[] chain, CertificateException exception) {
         super(parent, "Untrusted SSL/TLS Certificate", true);
+        AppIcon.applyTo(this);
         buildUI(host, port, chain, exception);
         pack();
         setLocationRelativeTo(parent);
@@ -31,18 +32,20 @@ public class UntrustedCertificateDialog extends JDialog {
         JPanel headerPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 10, 0));
         headerPanel.setOpaque(false);
         JLabel iconLabel = new JLabel("⚠️");
-        iconLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 28));
+        iconLabel.putClientProperty("uiFontSizeDelta", 15);
+        iconLabel.setFont(ThemeManager.getUiFont(Font.PLAIN, 15));
         headerPanel.add(iconLabel);
 
         JPanel titleBox = new JPanel(new GridLayout(2, 1, 0, 2));
         titleBox.setOpaque(false);
         JLabel titleLabel = new JLabel("Untrusted SSL Certificate");
-        titleLabel.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 16));
+        titleLabel.putClientProperty("uiFontSizeDelta", 3);
+        titleLabel.setFont(ThemeManager.getUiFont(Font.BOLD, 3));
         titleLabel.setForeground(ThemeManager.getOiaFgWarn());
         titleBox.add(titleLabel);
 
         JLabel subtitleLabel = new JLabel("The server certificate for " + host + ":" + port + " could not be verified.");
-        subtitleLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
+        subtitleLabel.setFont(ThemeManager.getUiFont());
         subtitleLabel.setForeground(ThemeManager.getFgMuted());
         titleBox.add(subtitleLabel);
         headerPanel.add(titleBox);
@@ -69,7 +72,7 @@ public class UntrustedCertificateDialog extends JDialog {
 
         JTextArea detailsArea = new JTextArea(sb.toString());
         detailsArea.setEditable(false);
-        detailsArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
+        detailsArea.setFont(ThemeManager.getMonospacedUiFont());
         ThemeManager.styleTextArea(detailsArea);
         detailsArea.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
 
@@ -91,7 +94,7 @@ public class UntrustedCertificateDialog extends JDialog {
 
         JButton trustBtn = new JButton("Connect Anyway");
         ThemeManager.styleButton(trustBtn, ThemeManager.ButtonVariant.DANGER);
-        trustBtn.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 13));
+        trustBtn.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
         trustBtn.addActionListener(e -> {
             accepted = true;
             dispose();

j3270/src/main/resources/icons/j3270_icon.svg

@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="124 738 320 320"
+   width="320"
+   height="320"
+   xml:space="preserve"
+   id="svg_j3270_icon"
+   version="1.1">
+  <metadata id="metadata8">
+    <rdf:RDF>
+      <cc:Work rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <!-- Pure black background (#000000) for classic 3270 CRT terminal look -->
+  <rect x="124" y="738" width="320" height="320" fill="#000000" />
+  <g transform="matrix(1.3333333,0,0,-1.3333333,0,1122.6667)" id="g10">
+    <g transform="scale(0.1)" id="g12">
+      <g id="g14">
+        <!-- Green Terminal Screen Frame -->
+        <path
+           id="path28"
+           style="fill:none;stroke:#00ff00;stroke-width:3.75079012;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="M 1177.27,2220.71 V 1142.45 H 3084.31 V 2220.71 H 1177.27" />
+        <!-- Blue Wave / Exponential Curve -->
+        <path
+           id="path30"
+           style="fill:none;stroke:#0000ff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1172.41,1137.58 79.1,-1.22 -0.21,-0.38 c 1.08,0 2.18,0 3.27,0 762.95,0 1464.86,417.88 1829.53,1089.21" />
+        <!-- Red Circular Arc -->
+        <path
+           id="path32"
+           style="fill:none;stroke:#ff0000;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2593.86,1620.73 -1.22,-28 -0.08,-0.08 c 0.43,-250.15 202.81,-452.72 452.3,-452.72 0.14,0 0.28,0 0.42,0 l 43.9,2.52" />
+        <!-- Yellow Smiley Head -->
+        <path
+           id="path34"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2976,1363.94 v 0.08 c 44.73,34.29 71.21,87.25 71.8,143.61 l 0.01,-0.15 c -0.06,97.48 -79.11,176.47 -176.59,176.47 -0.36,0 -0.73,0 -1.09,0 l -0.07,0.03 c -0.25,0 -0.51,0 -0.75,0 -37.38,0 -73.79,-11.94 -103.92,-34.08 l 0.02,-0.03 c -44.38,-34.04 -70.82,-86.47 -71.8,-142.39 l 0.06,0.04 c 0.54,-97.43 79.04,-176.47 176.46,-177.69 l 0.08,0.02 c 0.64,-0.01 1.29,-0.01 1.92,-0.01 37.4,0 73.82,11.94 103.96,34.08" />
+        <!-- 'l' -->
+        <path
+           id="path36"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1502.21,1785.02 h 23.13 v 32.86 h -23.13 l -4.87,8.52 v 154.56 h -18.25 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52" />
+        <path
+           id="path38"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1502.21,1785.02 h 23.13 v 32.86 h -23.13 l -4.87,8.52 v 154.56 h -18.25 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52" />
+        <!-- 'i' -->
+        <path
+           id="path40"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <path
+           id="path42"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <!-- 'b' -->
+        <path
+           id="path44"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1598.36,1785.02 v 195.94 h 18.25 v -48.68 h 41.38 l 13.39,-8.52 4.87,-8.52 4.86,-24.34 v -64.5 l -4.86,-25.56 -4.87,-7.3 -13.39,-8.52 h -59.63 m 18.25,32.86 h 41.38 l 4.87,8.52 v 64.5 l -4.87,8.52 h -41.38 v -81.54" />
+        <path
+           id="path46"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- '3' -->
+        <path
+           id="path48"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <path
+           id="path50"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <!-- '2' -->
+        <path
+           id="path52"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <path
+           id="path54"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <!-- '7' -->
+        <path
+           id="path56"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <path
+           id="path58"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <!-- '0' -->
+        <path
+           id="path60"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
+        <path
+           id="path62"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'j' -->
+        <path
+           id="path64"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <path
+           id="path66"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- Smile -->
+        <path
+           id="path68"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- Left Eye (cyan) -->
+        <path
+           id="path70"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2820.22,1595.17 0.01,0.01 c -14.62,-1.91 -25.56,-14.37 -25.56,-29.11 0,-0.03 0,-0.07 0,-0.1 l -0.02,-0.01 c 0,-0.03 0,-0.07 0,-0.1 0,-16.09 13.04,-29.14 29.13,-29.14 0.43,0 0.87,0.01 1.29,0.03 h 3.67 0.01 c 14.61,1.91 25.55,14.37 25.55,29.11 0,0.03 0,0.07 0,0.1 l 0.02,0.01 c 0,0.04 0,0.08 0,0.12 0,16.07 -13.03,29.09 -29.09,29.09 -0.03,0 -0.08,0 -0.12,0 l -4.89,-0.01" />
+        <!-- Right Eye (cyan) -->
+        <path
+           id="path72"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- Nose -->
+        <path
+           id="path74"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2892.03,1528.23 -29.21,-20.68" />
+        <path
+           id="path76"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2862.82,1507.55 h 32.86" />
+      </g>
+    </g>
+  </g>
+</svg>

j3270/src/main/resources/icons/lib3270j.svg

@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="144 814 280 169"
+   width="280"
+   height="169"
+   xml:space="preserve"
+   id="svg_lib3270j_cropped"
+   version="1.1">
+  <metadata id="metadata8">
+    <rdf:RDF>
+      <cc:Work rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <!-- Pure black background (#000000) for classic 3270 CRT terminal look -->
+  <rect x="144" y="814" width="280" height="169" fill="#000000" />
+  <g transform="matrix(1.3333333,0,0,-1.3333333,0,1122.6667)" id="g10">
+    <g transform="scale(0.1)" id="g12">
+      <g id="g14">
+        <!-- Green Terminal Screen Frame -->
+        <path
+           id="path28"
+           style="fill:none;stroke:#00ff00;stroke-width:3.75079012;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="M 1177.27,2220.71 V 1142.45 H 3084.31 V 2220.71 H 1177.27" />
+        <!-- Blue Wave / Exponential Curve -->
+        <path
+           id="path30"
+           style="fill:none;stroke:#0000ff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1172.41,1137.58 79.1,-1.22 -0.21,-0.38 c 1.08,0 2.18,0 3.27,0 762.95,0 1464.86,417.88 1829.53,1089.21" />
+        <!-- Red Circular Arc -->
+        <path
+           id="path32"
+           style="fill:none;stroke:#ff0000;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2593.86,1620.73 -1.22,-28 -0.08,-0.08 c 0.43,-250.15 202.81,-452.72 452.3,-452.72 0.14,0 0.28,0 0.42,0 l 43.9,2.52" />
+        <!-- Yellow Smiley Head -->
+        <path
+           id="path34"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2976,1363.94 v 0.08 c 44.73,34.29 71.21,87.25 71.8,143.61 l 0.01,-0.15 c -0.06,97.48 -79.11,176.47 -176.59,176.47 -0.36,0 -0.73,0 -1.09,0 l -0.07,0.03 c -0.25,0 -0.51,0 -0.75,0 -37.38,0 -73.79,-11.94 -103.92,-34.08 l 0.02,-0.03 c -44.38,-34.04 -70.82,-86.47 -71.8,-142.39 l 0.06,0.04 c 0.54,-97.43 79.04,-176.47 176.46,-177.69 l 0.08,0.02 c 0.64,-0.01 1.29,-0.01 1.92,-0.01 37.4,0 73.82,11.94 103.96,34.08" />
+        <!-- 'l' -->
+        <path
+           id="path36"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1502.21,1785.02 h 23.13 v 32.86 h -23.13 l -4.87,8.52 v 154.56 h -18.25 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52" />
+        <path
+           id="path38"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'i' -->
+        <path
+           id="path40"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <path
+           id="path42"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'b' -->
+        <path
+           id="path44"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1598.36,1785.02 v 195.94 h 18.25 v -48.68 h 41.38 l 13.39,-8.52 4.87,-8.52 4.86,-24.34 v -64.5 l -4.86,-25.56 -4.87,-7.3 -13.39,-8.52 h -59.63 m 18.25,32.86 h 41.38 l 4.87,8.52 v 64.5 l -4.87,8.52 h -41.38 v -81.54" />
+        <path
+           id="path46"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1598.36,1785.02 v 195.94 h 18.25 v -48.68 h 41.38 l 13.39,-8.52 4.87,-8.52 4.86,-24.34 v -64.5 l -4.86,-25.56 -4.87,-7.3 -13.39,-8.52 h -59.63 m 18.25,32.86 h 41.38 l 4.87,8.52 v 64.5 l -4.87,8.52 h -41.38 v -81.54" />
+        <!-- '3' -->
+        <path
+           id="path48"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <path
+           id="path50"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <!-- '2' -->
+        <path
+           id="path52"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <path
+           id="path54"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <!-- '7' -->
+        <path
+           id="path56"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <path
+           id="path58"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <!-- '0' -->
+        <path
+           id="path60"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
+        <path
+           id="path62"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
+        <!-- 'j' -->
+        <path
+           id="path64"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <path
+           id="path66"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <!-- Smile -->
+        <path
+           id="path68"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2778.85,1478.34 0.04,-0.02 c 21.03,-31.91 56.69,-51.12 94.91,-51.12 0.41,0 0.83,0 1.24,0.01 l -0.02,0.07 c 43.88,0.19 84.11,24.51 104.66,63.28" />
+        <!-- Left Eye (cyan) -->
+        <path
+           id="path70"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2820.22,1595.17 0.01,0.01 c -14.62,-1.91 -25.56,-14.37 -25.56,-29.11 0,-0.03 0,-0.07 0,-0.1 l -0.02,-0.01 c 0,-0.03 0,-0.07 0,-0.1 0,-16.09 13.04,-29.14 29.13,-29.14 0.43,0 0.87,0.01 1.29,0.03 h 3.67 0.01 c 14.61,1.91 25.55,14.37 25.55,29.11 0,0.03 0,0.07 0,0.1 l 0.02,0.01 c 0,0.04 0,0.08 0,0.12 0,16.07 -13.03,29.09 -29.09,29.09 -0.03,0 -0.08,0 -0.12,0 l -4.89,-0.01" />
+        <!-- Right Eye (cyan) -->
+        <path
+           id="path72"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2921.23,1569.61 v -3.65 l -0.01,-0.01 c 0,-0.27 -0.01,-0.54 -0.01,-0.81 0,-18.22 14.66,-33.05 32.87,-33.26 l 0.03,0.01 c 0.28,0 0.57,-0.01 0.84,-0.01 17.29,0 31.72,13.22 33.24,30.44 l -0.02,3.64 0.02,0.02 c 0,0.27 0.01,0.54 0.01,0.81 0,18.37 -14.9,33.28 -33.28,33.28 -0.26,0 -0.54,-0.01 -0.81,-0.02 l -0.02,-0.03 c -17.14,-0.18 -31.36,-13.34 -32.86,-30.42" />
+        <!-- Nose -->
+        <path
+           id="path74"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2892.03,1528.23 -29.21,-20.68" />
+        <path
+           id="path76"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2862.82,1507.55 h 32.86" />
+      </g>
+    </g>
+  </g>
+</svg>

j3270/src/test/java/haus/nightmare/j3270/AppIconTest.java

@@ -0,0 +1,57 @@
+package haus.nightmare.j3270;
+
+import haus.nightmare.j3270.ui.AppIcon;
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+import java.awt.*;
+import java.net.URL;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class AppIconTest {
+
+    @Test
+    public void testIconsAreLoaded() {
+        List<Image> icons = AppIcon.getAppIcons();
+        assertNotNull(icons, "Icons list must not be null");
+        assertFalse(icons.isEmpty(), "At least one icon image must be loaded");
+
+        // Verify standard sizes are present
+        int[] expectedSizes = {16, 24, 32, 48, 64, 128, 256, 512};
+        for (int expectedSize : expectedSizes) {
+            boolean found = icons.stream().anyMatch(img -> img.getWidth(null) == expectedSize && img.getHeight(null) == expectedSize);
+            assertTrue(found, "Expected icon of size " + expectedSize + "x" + expectedSize + " was not found");
+        }
+    }
+
+    @Test
+    public void testDefaultIcon() {
+        Image defaultIcon = AppIcon.getDefaultIcon();
+        assertNotNull(defaultIcon, "Default icon must not be null");
+        assertEquals(256, defaultIcon.getWidth(null), "Default icon width should be 256");
+        assertEquals(256, defaultIcon.getHeight(null), "Default icon height should be 256");
+    }
+
+    @Test
+    public void testApplyToInHeadless() {
+        // Must execute without exception even in headless environment
+        assertDoesNotThrow(() -> AppIcon.applyTo(null));
+
+        if (!GraphicsEnvironment.isHeadless()) {
+            JFrame frame = new JFrame();
+            assertDoesNotThrow(() -> AppIcon.applyTo(frame));
+            frame.dispose();
+        }
+    }
+
+    @Test
+    public void testSvgResourcesExist() {
+        URL svgUrl = getClass().getResource("/icons/lib3270j.svg");
+        assertNotNull(svgUrl, "lib3270j.svg must exist in /icons/");
+
+        URL iconSvgUrl = getClass().getResource("/icons/j3270_icon.svg");
+        assertNotNull(iconSvgUrl, "j3270_icon.svg must exist in /icons/");
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/LoggingConfigurationTest.java

@@ -0,0 +1,93 @@
+package haus.nightmare.j3270;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.PrintStream;
+import java.util.logging.Handler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class LoggingConfigurationTest {
+
+    private PrintStream originalOut;
+    private PrintStream originalErr;
+
+    @BeforeEach
+    public void setUp() {
+        originalOut = System.out;
+        originalErr = System.err;
+    }
+
+    @AfterEach
+    public void tearDown() {
+        System.setOut(originalOut);
+        System.setErr(originalErr);
+        // Ensure all handlers are closed and logging reset
+        J3270App.configureLogging(false);
+    }
+
+    @Test
+    public void testLoggingDisabledWhenDebugFalse() {
+        File logFile = new File("j3270.log");
+        if (logFile.exists()) {
+            logFile.delete();
+        }
+
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        ByteArrayOutputStream errContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+        System.setErr(new PrintStream(errContent));
+
+        J3270App.configureLogging(false);
+
+        // Root logger should have no handlers attached
+        Logger rootLogger = Logger.getLogger("");
+        assertEquals(0, rootLogger.getHandlers().length, "Root logger should have no handlers when debug is disabled");
+        assertEquals(Level.OFF, rootLogger.getLevel(), "Root logger level should be OFF when debug is disabled");
+
+        // Application loggers should be OFF
+        assertEquals(Level.OFF, Logger.getLogger("haus.nightmare").getLevel());
+        assertEquals(Level.OFF, Logger.getLogger("haus.nightmare.j3270").getLevel());
+        assertEquals(Level.OFF, Logger.getLogger("haus.nightmare.lib3270j").getLevel());
+
+        // Emit log records at all levels
+        Logger appLogger = Logger.getLogger("haus.nightmare.j3270.J3270App");
+        appLogger.severe("Test SEVERE message");
+        appLogger.warning("Test WARNING message");
+        appLogger.info("Test INFO message");
+        appLogger.fine("Test FINE message");
+
+        // Verify nothing was written to stdout or stderr
+        assertEquals(0, outContent.size(), "Standard output should be empty when debug is disabled");
+        assertEquals(0, errContent.size(), "Standard error should be empty when debug is disabled");
+
+        // Verify j3270.log was NOT created
+        assertFalse(logFile.exists(), "j3270.log should NOT be created when debug is disabled");
+    }
+
+    @Test
+    public void testLoggingEnabledWhenDebugTrue() {
+        J3270App.configureLogging(true);
+
+        Logger rootLogger = Logger.getLogger("");
+        Handler[] handlers = rootLogger.getHandlers();
+        assertTrue(handlers.length >= 2, "Root logger should have at least ConsoleHandler and FileHandler when debug is enabled");
+
+        assertEquals(Level.ALL, rootLogger.getLevel());
+        assertEquals(Level.ALL, Logger.getLogger("haus.nightmare").getLevel());
+        assertEquals(Level.ALL, Logger.getLogger("haus.nightmare.j3270").getLevel());
+        assertEquals(Level.ALL, Logger.getLogger("haus.nightmare.lib3270j").getLevel());
+
+        File logFile = new File("j3270.log");
+        assertTrue(logFile.exists(), "j3270.log should be created when debug is enabled");
+
+        // Clean up
+        J3270App.configureLogging(false);
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/storage/HostStorageAndProxyTest.java

@@ -0,0 +1,343 @@
+package haus.nightmare.j3270.storage;
+
+import haus.nightmare.j3270.ui.ConnectDialog;
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.TerminalModel;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.awt.Frame;
+import java.awt.GraphicsEnvironment;
+import java.util.List;
+import java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class HostStorageAndProxyTest {
+
+    private List<SavedHost> originalHosts;
+
+    @BeforeEach
+    public void setUp() {
+        originalHosts = HostStorage.getSavedHosts();
+        HostStorage.clearAll();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        HostStorage.clearAll();
+        HostStorage.saveAll(originalHosts);
+    }
+
+    @Test
+    @DisplayName("SavedHost correctly models per-connection proxy and converts to ConnectionConfig")
+    public void testSavedHostProxyToConnectionConfig() {
+        // 1. Host with SOCKS5 proxy and auth
+        SavedHost host1 = new SavedHost(
+                UUID.randomUUID().toString(),
+                "Prod Mainframe",
+                "mvs.corp.local",
+                2323,
+                4,
+                43,
+                80,
+                "TSO01",
+                false,
+                "TSO",
+                true,
+                true,
+                true,
+                "BOTH",
+                "037",
+                "SOCKS5",
+                "proxy.internal.corp",
+                1080,
+                "admin",
+                "secret123"
+        );
+
+        ConnectionConfig cfg1 = host1.toConnectionConfig();
+        assertEquals("mvs.corp.local", cfg1.getHost());
+        assertEquals(2323, cfg1.getPort());
+        assertTrue(cfg1.isUseTls());
+        assertEquals("TSO01", cfg1.getLuName());
+        assertEquals(ConnectionConfig.ProxyType.SOCKS5, cfg1.getProxyType());
+        assertEquals("proxy.internal.corp", cfg1.getProxyHost());
+        assertEquals(1080, cfg1.getProxyPort());
+        assertEquals("admin", cfg1.getProxyUsername());
+        assertEquals("secret123", cfg1.getProxyPassword());
+
+        // 2. Host with direct connection (NONE proxy)
+        SavedHost host2 = new SavedHost(
+                UUID.randomUUID().toString(),
+                "Local VM370",
+                "127.0.0.1",
+                23,
+                2,
+                24,
+                80,
+                "",
+                false,
+                "CMS",
+                false,
+                false,
+                false,
+                "BOTH",
+                "037",
+                "NONE",
+                "",
+                0,
+                "",
+                ""
+        );
+
+        ConnectionConfig cfg2 = host2.toConnectionConfig();
+        assertEquals("127.0.0.1", cfg2.getHost());
+        assertEquals(23, cfg2.getPort());
+        assertFalse(cfg2.isUseTls());
+        assertEquals(ConnectionConfig.ProxyType.NONE, cfg2.getProxyType());
+        assertNull(cfg2.getProxyHost());
+    }
+
+    @Test
+    @DisplayName("HostStorage persists and restores multiple host profiles with isolated per-connection proxies")
+    public void testHostStoragePersistenceAndIsolation() {
+        SavedHost h1 = new SavedHost(
+                "id-1",
+                "System A (SOCKS5)",
+                "sysa.corp",
+                23,
+                4,
+                62,
+                160,
+                "",
+                false,
+                "TSO",
+                false,
+                true,
+                true,
+                "BOTH",
+                "037",
+                "SOCKS5",
+                "socks.gateway.net",
+                1080,
+                "alice",
+                "passA"
+        );
+
+        SavedHost h2 = new SavedHost(
+                "id-2",
+                "System B (HTTP CONNECT)",
+                "sysb.dmz",
+                992,
+                5,
+                27,
+                132,
+                "LU99",
+                false,
+                "TSO",
+                true,
+                true,
+                true,
+                "BOTH",
+                "1047",
+                "HTTP",
+                "squid.proxy.org",
+                3128,
+                "bob",
+                "passB"
+        );
+
+        SavedHost h3 = new SavedHost(
+                "id-3",
+                "System C (Direct)",
+                "sysc.lan",
+                23,
+                2,
+                24,
+                80,
+                "",
+                true, // autoConnect
+                "CMS",
+                false,
+                true,
+                true,
+                "BOTH",
+                "500",
+                "NONE",
+                "",
+                0,
+                "",
+                ""
+        );
+
+        HostStorage.saveHost(h1);
+        HostStorage.saveHost(h2);
+        HostStorage.saveHost(h3);
+
+        List<SavedHost> loaded = HostStorage.getSavedHosts();
+        assertEquals(3, loaded.size());
+
+        SavedHost loadedA = HostStorage.findById("id-1");
+        assertNotNull(loadedA);
+        assertEquals("System A (SOCKS5)", loadedA.getName());
+        assertEquals("SOCKS5", loadedA.getProxyType());
+        assertEquals("socks.gateway.net", loadedA.getProxyHost());
+        assertEquals(1080, loadedA.getProxyPort());
+        assertEquals("alice", loadedA.getProxyUsername());
+        assertEquals("passA", loadedA.getProxyPassword());
+
+        SavedHost loadedB = HostStorage.findById("id-2");
+        assertNotNull(loadedB);
+        assertEquals("HTTP", loadedB.getProxyType());
+        assertEquals("squid.proxy.org", loadedB.getProxyHost());
+        assertEquals(3128, loadedB.getProxyPort());
+        assertEquals("bob", loadedB.getProxyUsername());
+        assertEquals("passB", loadedB.getProxyPassword());
+
+        SavedHost loadedC = HostStorage.findById("id-3");
+        assertNotNull(loadedC);
+        assertEquals("NONE", loadedC.getProxyType());
+        assertEquals("", loadedC.getProxyHost());
+        assertTrue(loadedC.isAutoConnect());
+
+        // Verify getAutoConnectHost returns System C with its own connection settings
+        SavedHost auto = HostStorage.getAutoConnectHost();
+        assertNotNull(auto);
+        assertEquals("id-3", auto.getId());
+        assertEquals(ConnectionConfig.ProxyType.NONE, auto.toConnectionConfig().getProxyType());
+
+        // Verify deleteHost
+        HostStorage.deleteHost("id-2");
+        assertEquals(2, HostStorage.getSavedHosts().size());
+        assertNull(HostStorage.findById("id-2"));
+    }
+
+    @Test
+    @DisplayName("HostStorage JSON matches a3270 format and parses a3270 JSON strings")
+    public void testA3270JsonFormatCompatibility() {
+        // String representative of a3270 saved_hosts preference JSON
+        String a3270Json = "[\n" +
+                "  {\n" +
+                "    \"id\": \"android-uuid-1\",\n" +
+                "    \"name\": \"Dallas Mainframe\",\n" +
+                "    \"host\": \"dallas.ibm.com\",\n" +
+                "    \"port\": 2323,\n" +
+                "    \"model\": 4,\n" +
+                "    \"dynamicRows\": 62,\n" +
+                "    \"dynamicCols\": 160,\n" +
+                "    \"luName\": \"DAL01\",\n" +
+                "    \"autoConnect\": false,\n" +
+                "    \"hostType\": \"TSO\",\n" +
+                "    \"useTls\": true,\n" +
+                "    \"tlsVerifyCert\": false,\n" +
+                "    \"tn3270e\": true,\n" +
+                "    \"graphicsMode\": \"BOTH\",\n" +
+                "    \"codePage\": \"037\",\n" +
+                "    \"proxyType\": \"SOCKS5\",\n" +
+                "    \"proxyHost\": \"10.20.30.40\",\n" +
+                "    \"proxyPort\": 9050,\n" +
+                "    \"proxyUsername\": \"dallasuser\",\n" +
+                "    \"proxyPassword\": \"dallaspass\"\n" +
+                "  }\n" +
+                "]";
+
+        List<SavedHost> parsed = HostStorage.parseHostsJson(a3270Json);
+        assertEquals(1, parsed.size());
+        SavedHost h = parsed.get(0);
+        assertEquals("android-uuid-1", h.getId());
+        assertEquals("Dallas Mainframe", h.getName());
+        assertEquals("dallas.ibm.com", h.getHost());
+        assertEquals(2323, h.getPort());
+        assertEquals(4, h.getModel());
+        assertTrue(h.isUseTls());
+        assertFalse(h.isTlsVerifyCert());
+        assertEquals("SOCKS5", h.getProxyType());
+        assertEquals("10.20.30.40", h.getProxyHost());
+        assertEquals(9050, h.getProxyPort());
+        assertEquals("dallasuser", h.getProxyUsername());
+        assertEquals("dallaspass", h.getProxyPassword());
+
+        // Roundtrip serialization
+        String serialized = HostStorage.serializeHostsJson(parsed);
+        List<SavedHost> roundtripped = HostStorage.parseHostsJson(serialized);
+        assertEquals(1, roundtripped.size());
+        SavedHost r = roundtripped.get(0);
+        assertEquals(h.getId(), r.getId());
+        assertEquals(h.getProxyType(), r.getProxyType());
+        assertEquals(h.getProxyHost(), r.getProxyHost());
+        assertEquals(h.getProxyPort(), r.getProxyPort());
+        assertEquals(h.getProxyUsername(), r.getProxyUsername());
+        assertEquals(h.getProxyPassword(), r.getProxyPassword());
+    }
+
+    @Test
+    @DisplayName("ConnectDialog loads profile proxy and applies per-connection proxy to ConnectionConfig")
+    public void testConnectDialogProxyHandling() {
+        if (!GraphicsEnvironment.isHeadless()) {
+            ConnectDialog dialog = new ConnectDialog((Frame) null);
+            dialog.setInitialHost("test.mainframe.com");
+            dialog.setInitialPort(23);
+            dialog.setInitialProxy(ConnectionConfig.ProxyType.SOCKS5, "127.0.0.1", 1080, "testuser", "testpass");
+
+            assertEquals(ConnectionConfig.ProxyType.SOCKS5, dialog.getSelectedProxyType());
+            assertEquals("127.0.0.1", dialog.getProxyHost());
+            assertEquals(1080, dialog.getProxyPort());
+            assertEquals("testuser", dialog.getProxyUsername());
+            assertEquals("testpass", dialog.getProxyPassword());
+
+            // Loading a profile updates dialog proxy fields
+            SavedHost profile = new SavedHost(
+                    "p1", "Profile 1", "prod.ibm.net", 992, 4, 43, 80, "", false,
+                    "TSO", true, true, true, "BOTH", "037",
+                    "HTTP", "proxy.corp.net", 8080, "corpuser", "corppass"
+            );
+            dialog.loadProfile(profile);
+
+            assertEquals(ConnectionConfig.ProxyType.HTTP, dialog.getSelectedProxyType());
+            assertEquals("proxy.corp.net", dialog.getProxyHost());
+            assertEquals(8080, dialog.getProxyPort());
+            assertEquals("corpuser", dialog.getProxyUsername());
+            assertEquals("corppass", dialog.getProxyPassword());
+            dialog.dispose();
+        }
+    }
+
+    @Test
+    @DisplayName("SavedHost preserves all GraphicsMode settings across JSON serialization without clobbering to BOTH")
+    public void testSavedHostGraphicsModeSerializationRoundtrip() {
+        for (haus.nightmare.lib3270j.graphics.GraphicsMode gm : haus.nightmare.lib3270j.graphics.GraphicsMode.values()) {
+            SavedHost host = new SavedHost(
+                    UUID.randomUUID().toString(),
+                    "Gfx " + gm.name(),
+                    "test.host.com",
+                    23,
+                    4,
+                    24,
+                    80,
+                    "",
+                    false,
+                    "TSO",
+                    false,
+                    false,
+                    true,
+                    gm.name(),
+                    "037",
+                    "NONE",
+                    "",
+                    0,
+                    "",
+                    ""
+            );
+            String json = HostStorage.serializeHostsJson(List.of(host));
+            List<SavedHost> parsed = HostStorage.parseHostsJson(json);
+            assertEquals(1, parsed.size());
+            assertEquals(gm.name(), parsed.get(0).getGraphicsMode(),
+                    "Graphics mode " + gm.name() + " must be preserved and not coerced to BOTH");
+            assertEquals(gm, parsed.get(0).toConnectionConfig().getGraphicsMode(),
+                    "ConnectionConfig must reflect GraphicsMode." + gm.name());
+        }
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/ui/BehaviorSettingsTest.java

@@ -0,0 +1,298 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.j3270.J3270App;
+import haus.nightmare.j3270.config.Settings;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.File;
+import java.lang.reflect.Field;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class BehaviorSettingsTest {
+
+    private boolean origAutoReconnect;
+    private int origReconnectMaxRetries;
+    private boolean origInputMask;
+    private String origInputMaskChar;
+    private boolean origBlockPaste;
+
+    @BeforeEach
+    public void setUp() {
+        origAutoReconnect = Settings.getAutoConnectAutoReconnect();
+        origReconnectMaxRetries = Settings.getAutoConnectReconnectMaxRetries();
+        origInputMask = Settings.getInputMask();
+        origInputMaskChar = Settings.getInputMaskChar();
+        origBlockPaste = Settings.getBlockPaste();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        Settings.setAutoConnectAutoReconnect(origAutoReconnect);
+        Settings.setAutoConnectReconnectMaxRetries(origReconnectMaxRetries);
+        Settings.setInputMask(origInputMask);
+        Settings.setInputMaskChar(origInputMaskChar);
+        Settings.setBlockPaste(origBlockPaste);
+    }
+
+    @Test
+    @DisplayName("Auto-reconnect settings get/set and alias consistency")
+    public void testAutoReconnectSettingsPersistence() {
+        Settings.setAutoConnectAutoReconnect(true);
+        assertTrue(Settings.getAutoConnectAutoReconnect());
+        assertTrue(Settings.getAutoReconnect());
+
+        Settings.setAutoReconnect(false);
+        assertFalse(Settings.getAutoConnectAutoReconnect());
+        assertFalse(Settings.getAutoReconnect());
+
+        Settings.setAutoConnectReconnectMaxRetries(8);
+        assertEquals(8, Settings.getAutoConnectReconnectMaxRetries());
+    }
+
+    @Test
+    @DisplayName("Input mask settings get/set and defaults")
+    public void testInputMaskSettingsPersistence() {
+        Settings.setInputMask(false);
+        assertFalse(Settings.getInputMask());
+        assertFalse(Settings.getInputMaskEnabled());
+
+        Settings.setInputMaskEnabled(true);
+        assertTrue(Settings.getInputMask());
+        assertTrue(Settings.getInputMaskEnabled());
+
+        Settings.setInputMaskChar("#");
+        assertEquals("#", Settings.getInputMaskChar());
+
+        Settings.setInputMaskChar("*");
+        assertEquals("*", Settings.getInputMaskChar());
+
+        // Empty string should fall back to '*'
+        Settings.setInputMaskChar("");
+        assertEquals("*", Settings.getInputMaskChar());
+    }
+
+    @Test
+    @DisplayName("Block paste setting defaults to true and binds to SettingsDialog")
+    public void testBlockPasteSettingAndDialogBinding() throws Exception {
+        // Default must be true
+        assertTrue(Settings.getBlockPaste(), "Settings.getBlockPaste() should default to true");
+
+        Settings.setBlockPaste(false);
+        assertFalse(Settings.getBlockPaste());
+        Settings.setBlockPaste(true);
+        assertTrue(Settings.getBlockPaste());
+
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+            Field blockPasteField = SettingsDialog.class.getDeclaredField("blockPasteCheck");
+            blockPasteField.setAccessible(true);
+            JCheckBox blockPasteCheck = (JCheckBox) blockPasteField.get(dialog);
+            assertNotNull(blockPasteCheck, "blockPasteCheck must exist in SettingsDialog");
+            assertEquals("Block paste", blockPasteCheck.getText());
+            assertEquals(Settings.getBlockPaste(), blockPasteCheck.isSelected());
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    @Test
+    @DisplayName("INI export and load preserves autoReconnect and inputMask")
+    public void testIniExportAndLoad() throws Exception {
+        Settings.setAutoConnectAutoReconnect(true);
+        Settings.setAutoConnectReconnectMaxRetries(12);
+        Settings.setInputMask(false);
+        Settings.setInputMaskChar("@");
+
+        File tempFile = File.createTempFile("j3270_behavior_test", ".ini");
+        tempFile.deleteOnExit();
+
+        Settings.exportToIniFile(tempFile.getAbsolutePath());
+
+        // Reset to different values
+        Settings.setAutoConnectAutoReconnect(false);
+        Settings.setAutoConnectReconnectMaxRetries(3);
+        Settings.setInputMask(true);
+        Settings.setInputMaskChar("*");
+
+        // Load back from INI
+        Settings.loadFromIniFile(tempFile.getAbsolutePath());
+
+        assertTrue(Settings.getAutoConnectAutoReconnect());
+        assertEquals(12, Settings.getAutoConnectReconnectMaxRetries());
+        assertFalse(Settings.getInputMask());
+        assertEquals("@", Settings.getInputMaskChar());
+
+        tempFile.delete();
+    }
+
+    @Test
+    @DisplayName("TerminalPanel reloads input mask settings correctly")
+    public void testTerminalPanelInputMaskReload() {
+        try {
+            TerminalPanel panel = new TerminalPanel();
+            Settings.setInputMask(false);
+            Settings.setInputMaskChar("$");
+            panel.reloadSettings();
+
+            assertFalse(panel.isInputMaskEnabled());
+            assertEquals("$", panel.getInputMaskChar());
+
+            panel.setInputMaskEnabled(true);
+            assertTrue(panel.isInputMaskEnabled());
+
+            panel.setInputMaskChar("#");
+            assertEquals("#", panel.getInputMaskChar());
+        } catch (HeadlessException ignored) {
+            // Safe fallback for headless runner
+        }
+    }
+
+    @Test
+    @DisplayName("SettingsDialog contains Auto-Reconnect checkbox and Input Mask controls in Behavior panel")
+    public void testSettingsDialogBehaviorControls() throws Exception {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            // In automated/headless environments, JFrame cannot be initialized
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+
+            // Access private fields in SettingsDialog to verify component bindings
+            Field autoRecField = SettingsDialog.class.getDeclaredField("autoReconnectCheck");
+            autoRecField.setAccessible(true);
+            JCheckBox autoReconnectCheck = (JCheckBox) autoRecField.get(dialog);
+            assertNotNull(autoReconnectCheck, "autoReconnectCheck must exist in SettingsDialog");
+            assertEquals("Auto-Reconnect on Disconnect", autoReconnectCheck.getText());
+            assertEquals(Settings.getAutoConnectAutoReconnect(), autoReconnectCheck.isSelected());
+
+            Field inputMaskCheckField = SettingsDialog.class.getDeclaredField("inputMaskCheck");
+            inputMaskCheckField.setAccessible(true);
+            JCheckBox inputMaskCheck = (JCheckBox) inputMaskCheckField.get(dialog);
+            assertNotNull(inputMaskCheck, "inputMaskCheck must exist in SettingsDialog");
+            assertEquals(Settings.getInputMask(), inputMaskCheck.isSelected());
+
+            Field inputMaskCharField = SettingsDialog.class.getDeclaredField("inputMaskCharField");
+            inputMaskCharField.setAccessible(true);
+            JTextField maskCharField = (JTextField) inputMaskCharField.get(dialog);
+            assertNotNull(maskCharField, "inputMaskCharField must exist in SettingsDialog");
+            assertEquals(Settings.getInputMaskChar(), maskCharField.getText());
+            assertEquals(inputMaskCheck.isSelected(), maskCharField.isEnabled());
+
+            // Test interaction: unchecking inputMask disables character field
+            inputMaskCheck.setSelected(false);
+            for (java.awt.event.ActionListener al : inputMaskCheck.getActionListeners()) {
+                al.actionPerformed(new java.awt.event.ActionEvent(inputMaskCheck, java.awt.event.ActionEvent.ACTION_PERFORMED, ""));
+            }
+            assertFalse(maskCharField.isEnabled());
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    @Test
+    @DisplayName("SettingsDialog tabs are organized into Appearance, Behavior, Connection, and Entry Assist")
+    public void testSettingsDialogReorganizedTabsAndGrouping() throws Exception {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+
+            // Find top-level JTabbedPane
+            JTabbedPane mainTabs = null;
+            for (Component c : dialog.getContentPane().getComponents()) {
+                if (c instanceof JTabbedPane) {
+                    mainTabs = (JTabbedPane) c;
+                    break;
+                }
+            }
+            assertNotNull(mainTabs, "Main JTabbedPane must exist");
+            assertEquals(4, mainTabs.getTabCount(), "Must have 4 main tabs");
+            assertEquals("Appearance", mainTabs.getTitleAt(0));
+            assertEquals("Behavior", mainTabs.getTitleAt(1));
+            assertEquals("Connection", mainTabs.getTitleAt(2));
+            assertEquals("Entry Assist", mainTabs.getTitleAt(3));
+
+            // Verify Appearance subtabs: Display & Font, Colors
+            Component appComp = mainTabs.getComponentAt(0);
+            assertTrue(appComp instanceof JPanel);
+            JTabbedPane appTabs = findTabbedPane((JPanel) appComp);
+            assertNotNull(appTabs, "Appearance panel must have subtabs");
+            assertEquals(2, appTabs.getTabCount());
+            assertEquals("Display & Font", appTabs.getTitleAt(0));
+            assertEquals("Colors", appTabs.getTitleAt(1));
+
+            // Verify Behavior subtabs: General, Keymap
+            Component behComp = mainTabs.getComponentAt(1);
+            assertTrue(behComp instanceof JPanel);
+            JTabbedPane behTabs = findTabbedPane((JPanel) behComp);
+            assertNotNull(behTabs, "Behavior panel must have subtabs");
+            assertEquals(2, behTabs.getTabCount());
+            assertEquals("General", behTabs.getTitleAt(0));
+            assertEquals("Keymap", behTabs.getTitleAt(1));
+
+            // Verify controls exist in SettingsDialog
+            Field cursorStyleField = SettingsDialog.class.getDeclaredField("cursorStyleBox");
+            cursorStyleField.setAccessible(true);
+            assertNotNull(cursorStyleField.get(dialog), "cursorStyleBox must exist");
+
+            Field crosshairField = SettingsDialog.class.getDeclaredField("crosshairRulerCheck");
+            crosshairField.setAccessible(true);
+            assertNotNull(crosshairField.get(dialog), "crosshairRulerCheck must exist");
+
+            Field fourColorField = SettingsDialog.class.getDeclaredField("fourColorOverrideCheck");
+            fourColorField.setAccessible(true);
+            assertNotNull(fourColorField.get(dialog), "fourColorOverrideCheck must exist");
+
+            Field numericLockField = SettingsDialog.class.getDeclaredField("numericFieldLockCheck");
+            numericLockField.setAccessible(true);
+            assertNotNull(numericLockField.get(dialog), "numericFieldLockCheck must exist");
+
+            Field autoSkipField = SettingsDialog.class.getDeclaredField("autoSkipCheck");
+            autoSkipField.setAccessible(true);
+            assertNotNull(autoSkipField.get(dialog), "autoSkipCheck must exist");
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    private static JTabbedPane findTabbedPane(Container container) {
+        for (Component c : container.getComponents()) {
+            if (c instanceof JTabbedPane) {
+                return (JTabbedPane) c;
+            }
+            if (c instanceof Container) {
+                JTabbedPane nested = findTabbedPane((Container) c);
+                if (nested != null) return nested;
+            }
+        }
+        return null;
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/ui/FontSettingsPersistenceTest.java

@@ -15,17 +15,23 @@ public class FontSettingsPersistenceTest {
 
     private int originalFontSize;
     private String originalFontFamily;
+    private int originalUiFontSize;
+    private String originalUiFontFamily;
 
     @BeforeEach
     public void setup() {
         originalFontSize = Settings.getFontSize();
         originalFontFamily = Settings.getFontFamily();
+        originalUiFontSize = Settings.getUiFontSize();
+        originalUiFontFamily = Settings.getUiFontFamily();
     }
 
     @AfterEach
     public void tearDown() {
         Settings.setFontSize(originalFontSize);
         Settings.setFontFamily(originalFontFamily);
+        Settings.setUiFontSize(originalUiFontSize);
+        Settings.setUiFontFamily(originalUiFontFamily);
     }
 
     @Test
@@ -39,6 +45,76 @@ public class FontSettingsPersistenceTest {
         assertEquals(18, Settings.getFontSize());
     }
 
+    @Test
+    public void testUiFontSettingsIndependence() {
+        // Configure terminal fonts
+        Settings.setFontFamily("Courier");
+        Settings.setFontSize(20);
+
+        // Configure UI fonts
+        Settings.setUiFontFamily("Dialog");
+        Settings.setUiFontSize(15);
+
+        // Verify independent getters
+        assertEquals("Courier", Settings.getFontFamily());
+        assertEquals(20, Settings.getFontSize());
+        assertEquals("Dialog", Settings.getUiFontFamily());
+        assertEquals(15, Settings.getUiFontSize());
+
+        // Change UI font and ensure terminal font is untouched
+        Settings.setUiFontSize(18);
+        Settings.setUiFontFamily("SansSerif");
+        assertEquals("Courier", Settings.getFontFamily(), "Terminal font family must not change when UI font changes");
+        assertEquals(20, Settings.getFontSize(), "Terminal font size must not change when UI font changes");
+        assertEquals("SansSerif", Settings.getUiFontFamily());
+        assertEquals(18, Settings.getUiFontSize());
+
+        // Change terminal font and ensure UI font is untouched
+        Settings.setFontSize(24);
+        Settings.setFontFamily("IBM 3270");
+        assertEquals("SansSerif", Settings.getUiFontFamily(), "UI font family must not change when terminal font changes");
+        assertEquals(18, Settings.getUiFontSize(), "UI font size must not change when terminal font changes");
+        assertEquals("IBM 3270", Settings.getFontFamily());
+        assertEquals(24, Settings.getFontSize());
+    }
+
+    @Test
+    public void testUiFontIniImportExport() throws Exception {
+        java.io.File tempIni = java.io.File.createTempFile("j3270_ui_font_test", ".ini");
+        tempIni.deleteOnExit();
+
+        try {
+            try (java.io.PrintWriter pw = new java.io.PrintWriter(tempIni)) {
+                pw.println("[appearance]");
+                pw.println("uiFontFamily = Dialog");
+                pw.println("uiFontSize = 16");
+                pw.println("fontFamily = Monospaced");
+                pw.println("fontSize = 22");
+            }
+
+            Settings.loadFromIniFile(tempIni.getAbsolutePath());
+
+            assertEquals("Dialog", Settings.getUiFontFamily());
+            assertEquals(16, Settings.getUiFontSize());
+            assertEquals("Monospaced", Settings.getFontFamily());
+            assertEquals(22, Settings.getFontSize());
+
+            // Export to another file and check contents
+            java.io.File exportIni = java.io.File.createTempFile("j3270_ui_font_export", ".ini");
+            exportIni.deleteOnExit();
+
+            Settings.exportToIniFile(exportIni.getAbsolutePath());
+            String exported = new String(java.nio.file.Files.readAllBytes(exportIni.toPath()));
+
+            assertTrue(exported.contains("uiFontFamily = Dialog"), "Exported INI must contain uiFontFamily");
+            assertTrue(exported.contains("uiFontSize = 16"), "Exported INI must contain uiFontSize");
+            assertTrue(exported.contains("fontFamily = Monospaced"), "Exported INI must contain terminal fontFamily");
+            assertTrue(exported.contains("fontSize = 22"), "Exported INI must contain terminal fontSize");
+        } finally {
+            tempIni.delete();
+        }
+    }
+
     @Test
     public void testTerminalPanelResizeDoesNotResetFontSize() {
         try {
@@ -77,4 +153,57 @@ public class FontSettingsPersistenceTest {
             // In headless environment without display, Settings persistence is verified above
         }
     }
+
+    @Test
+    public void testSettingsDialogApplyDoesNotIncrementFontSize() throws Exception {
+        try {
+            Settings.setUiFontSize(16);
+            Settings.setFontSize(22);
+            Settings.setUiFontFamily("Dialog");
+            Settings.setFontFamily("Monospaced");
+            ThemeManager.applyUIManagerDefaults(ThemeManager.getTheme());
+
+            SettingsDialog dialog = new SettingsDialog(null);
+
+            java.lang.reflect.Method applyMethod = SettingsDialog.class.getDeclaredMethod("applySettings");
+            applyMethod.setAccessible(true);
+
+            // Find all JLabels in SettingsDialog
+            java.util.List<javax.swing.JLabel> labels = new java.util.ArrayList<>();
+            findLabelsRecursively(dialog.getContentPane(), labels);
+            assertFalse(labels.isEmpty(), "SettingsDialog must contain labels");
+
+            for (javax.swing.JLabel label : labels) {
+                assertEquals(16, label.getFont().getSize(),
+                        "Label '" + label.getText() + "' must initially have size 16");
+            }
+
+            // Click Apply multiple times
+            for (int click = 1; click <= 5; click++) {
+                applyMethod.invoke(dialog);
+
+                assertEquals(16, Settings.getUiFontSize(), "Settings uiFontSize must stay 16");
+                assertEquals(22, Settings.getFontSize(), "Settings fontSize must stay 22");
+
+                for (javax.swing.JLabel label : labels) {
+                    assertEquals(16, label.getFont().getSize(),
+                            "Label '" + label.getText() + "' must remain at size 16 after click #" + click);
+                }
+            }
+
+            dialog.dispose();
+        } catch (HeadlessException e) {
+            // Ignored in headless environment if dialog creation fails
+        }
+    }
+
+    private void findLabelsRecursively(java.awt.Container container, java.util.List<javax.swing.JLabel> labels) {
+        for (java.awt.Component c : container.getComponents()) {
+            if (c instanceof javax.swing.JLabel) {
+                labels.add((javax.swing.JLabel) c);
+            } else if (c instanceof java.awt.Container) {
+                findLabelsRecursively((java.awt.Container) c, labels);
+            }
+        }
+    }
 }

j3270/src/test/java/haus/nightmare/j3270/ui/HotspotEngineTest.java

@@ -0,0 +1,192 @@
+package haus.nightmare.j3270.ui;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Unit tests for HotspotEngine (Phase 25.2).
+ * Verifies regex detection of URLs, PF keys, Enter, and menu choices,
+ * hit-testing, action strings, and word boundary isolation.
+ */
+public class HotspotEngineTest {
+
+    private HotspotEngine engine;
+
+    @BeforeEach
+    public void setUp() {
+        engine = new HotspotEngine();
+    }
+
+    @Test
+    @DisplayName("Detects HTTP, HTTPS, FTP, and WWW URLs with action strings")
+    public void testUrlDetection() {
+        String screen = "Visit https://ibm.com/support or http://example.org:8080/path?q=1 for help.\n" +
+                        "Download from ftp://ftp.archive.org/pub/files or browse www.google.com.";
+        List<HotspotEngine.Hotspot> hotspots = engine.scanText(screen, 2, 80);
+
+        assertEquals(4, hotspots.size());
+
+        HotspotEngine.Hotspot h0 = hotspots.get(0);
+        assertEquals(HotspotEngine.HotspotType.URL, h0.getType());
+        assertEquals("https://ibm.com/support", h0.getDisplayText());
+        assertEquals("https://ibm.com/support", h0.getAction());
+        assertEquals(0, h0.getStartRow());
+        assertEquals(6, h0.getStartCol());
+        assertTrue(h0.contains(0, 10));
+        assertFalse(h0.contains(0, 5));
+
+        HotspotEngine.Hotspot h1 = hotspots.get(1);
+        assertEquals("http://example.org:8080/path?q=1", h1.getDisplayText());
+        assertEquals("http://example.org:8080/path?q=1", h1.getAction());
+
+        HotspotEngine.Hotspot h2 = hotspots.get(2);
+        assertEquals("ftp://ftp.archive.org/pub/files", h2.getDisplayText());
+        assertEquals("ftp://ftp.archive.org/pub/files", h2.getAction());
+
+        HotspotEngine.Hotspot h3 = hotspots.get(3);
+        assertEquals("www.google.com", h3.getDisplayText());
+        assertEquals("http://www.google.com", h3.getAction(), "www. URLs should have http:// prepended for action");
+    }
+
+    @Test
+    @DisplayName("Detects PF1..PF24, F1..F24, PA1..PA3, and [ENTER] function keys")
+    public void testFunctionKeyDetection() {
+        String screen = "PF1=Help   PF3=Exit   PF7=Up   PF8=Down   PF12=Cancel\n" +
+                        "F1=Help    F12=Cancel PA1=Abort [ENTER]=Continue";
+        List<HotspotEngine.Hotspot> hotspots = engine.scanText(screen, 2, 80);
+
+        assertEquals(9, hotspots.size());
+
+        // PF1
+        assertEquals(HotspotEngine.HotspotType.PF_KEY, hotspots.get(0).getType());
+        assertEquals("PF1", hotspots.get(0).getDisplayText());
+        assertEquals("[pf1]", hotspots.get(0).getAction());
+
+        // PF3
+        assertEquals("PF3", hotspots.get(1).getDisplayText());
+        assertEquals("[pf3]", hotspots.get(1).getAction());
+
+        // PF7
+        assertEquals("PF7", hotspots.get(2).getDisplayText());
+        assertEquals("[pf7]", hotspots.get(2).getAction());
+
+        // PF8
+        assertEquals("PF8", hotspots.get(3).getDisplayText());
+        assertEquals("[pf8]", hotspots.get(3).getAction());
+
+        // PF12
+        assertEquals("PF12", hotspots.get(4).getDisplayText());
+        assertEquals("[pf12]", hotspots.get(4).getAction());
+
+        // F1 -> [pf1]
+        assertEquals("F1", hotspots.get(5).getDisplayText());
+        assertEquals("[pf1]", hotspots.get(5).getAction());
+
+        // F12 -> [pf12]
+        assertEquals("F12", hotspots.get(6).getDisplayText());
+        assertEquals("[pf12]", hotspots.get(6).getAction());
+
+        // PA1 -> [pa1]
+        assertEquals(HotspotEngine.HotspotType.PF_KEY, hotspots.get(7).getType());
+        assertEquals("PA1", hotspots.get(7).getDisplayText());
+        assertEquals("[pa1]", hotspots.get(7).getAction());
+
+        // [ENTER] -> [enter]
+        assertEquals(HotspotEngine.HotspotType.ENTER, hotspots.get(8).getType());
+        assertEquals("[ENTER]", hotspots.get(8).getDisplayText());
+        assertEquals("[enter]", hotspots.get(8).getAction());
+    }
+
+    @Test
+    @DisplayName("Isolates function keys with strict word boundaries to avoid false positives")
+    public void testWordBoundaryIsolation() {
+        String screen = "STAFF1 MEMBER SPF12 FILE TRANSFER PROMPT";
+        List<HotspotEngine.Hotspot> hotspots = engine.scanText(screen, 1, 80);
+
+        // Neither STAFF1 nor SPF12 nor TRANSFER should be detected as PF1, F1, or F12
+        assertEquals(0, hotspots.size(), "Embedded letters in words should not trigger PF key hotspots");
+    }
+
+    @Test
+    @DisplayName("Detects numbered menu choices and arrow prompts")
+    public void testMenuChoiceDetection() {
+        String screen = "  1. User Settings\n" +
+                        "  2. Session Profiles\n" +
+                        "===> 3";
+        List<HotspotEngine.Hotspot> hotspots = engine.scanText(screen, 3, 80);
+
+        assertEquals(3, hotspots.size());
+
+        HotspotEngine.Hotspot m1 = hotspots.get(0);
+        assertEquals(HotspotEngine.HotspotType.MENU_CHOICE, m1.getType());
+        assertEquals("1.", m1.getDisplayText());
+        assertEquals("1[enter]", m1.getAction());
+        assertEquals(0, m1.getStartRow());
+
+        HotspotEngine.Hotspot m2 = hotspots.get(1);
+        assertEquals("2.", m2.getDisplayText());
+        assertEquals("2[enter]", m2.getAction());
+        assertEquals(1, m2.getStartRow());
+
+        HotspotEngine.Hotspot m3 = hotspots.get(2);
+        assertEquals("===> 3", m3.getDisplayText());
+        assertEquals("3[enter]", m3.getAction());
+        assertEquals(2, m3.getStartRow());
+    }
+
+    @Test
+    @DisplayName("Hit-testing finds hotspot under specific coordinate")
+    public void testFindHotspot() {
+        String screen = "PF3=Exit   https://github.com   ===> 1";
+        engine.scanText(screen, 1, 80);
+
+        // Under PF3 (cols 0..2)
+        HotspotEngine.Hotspot hPf = engine.findHotspot(0, 1);
+        assertNotNull(hPf);
+        assertEquals("PF3", hPf.getDisplayText());
+
+        // Space between hotspots
+        assertNull(engine.findHotspot(0, 5));
+
+        // Under URL (cols 11..28)
+        HotspotEngine.Hotspot hUrl = engine.findHotspot(0, 15);
+        assertNotNull(hUrl);
+        assertEquals("https://github.com", hUrl.getDisplayText());
+
+        // Under prompt (cols 32..37)
+        HotspotEngine.Hotspot hPrompt = engine.findHotspot(0, 34);
+        assertNotNull(hPrompt);
+        assertEquals("===> 1", hPrompt.getDisplayText());
+    }
+
+    @Test
+    @DisplayName("Toggling engine options enables or disables specific hotspot categories")
+    public void testTogglingCategories() {
+        String screen = "PF3=Exit https://example.com 1. Options";
+
+        engine.scanText(screen, 1, 80);
+        assertEquals(3, engine.getHotspots().size());
+
+        // Disable URLs
+        engine.setUrlEnabled(false);
+        List<HotspotEngine.Hotspot> noUrls = engine.scanText(screen, 1, 80);
+        assertEquals(2, noUrls.size());
+        assertFalse(noUrls.stream().anyMatch(h -> h.getType() == HotspotEngine.HotspotType.URL));
+
+        // Disable PF keys
+        engine.setPfKeyEnabled(false);
+        List<HotspotEngine.Hotspot> menuOnly = engine.scanText(screen, 1, 80);
+        assertEquals(1, menuOnly.size());
+        assertEquals(HotspotEngine.HotspotType.MENU_CHOICE, menuOnly.get(0).getType());
+
+        // Disable menu choices
+        engine.setMenuChoiceEnabled(false);
+        List<HotspotEngine.Hotspot> empty = engine.scanText(screen, 1, 80);
+        assertEquals(0, empty.size());
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/ui/ImportConfigTest.java

@@ -0,0 +1,157 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.j3270.J3270App;
+import haus.nightmare.j3270.config.Settings;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class ImportConfigTest {
+
+    private String origFontFamily;
+    private int origFontSize;
+    private String origHost;
+    private int origPort;
+    private boolean origAutoReconnect;
+
+    @BeforeEach
+    public void setUp() {
+        origFontFamily = Settings.getFontFamily();
+        origFontSize = Settings.getFontSize();
+        origHost = Settings.getAutoConnectHost();
+        origPort = Settings.getAutoConnectPort();
+        origAutoReconnect = Settings.getAutoConnectAutoReconnect();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        Settings.setFontFamily(origFontFamily);
+        Settings.setFontSize(origFontSize);
+        Settings.setAutoConnectHost(origHost);
+        Settings.setAutoConnectPort(origPort);
+        Settings.setAutoConnectAutoReconnect(origAutoReconnect);
+    }
+
+    @Test
+    @DisplayName("SettingsDialog contains Import Config button positioned to the left of Export Config")
+    public void testImportButtonPlacementAndProperties() {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+
+            JButton btnImport = dialog.getBtnImport();
+            JButton btnExport = dialog.getBtnExport();
+
+            assertNotNull(btnImport, "Import Config button must exist");
+            assertNotNull(btnExport, "Export Config button must exist");
+
+            assertEquals("Import Config...", btnImport.getText());
+            assertEquals("Export Config...", btnExport.getText());
+
+            // Verify btnImport is in the same container and positioned before (to the left of) btnExport
+            Container parent = btnImport.getParent();
+            assertNotNull(parent, "Import button must have a parent container");
+            assertSame(parent, btnExport.getParent(), "Import and Export buttons must share the same parent panel");
+
+            Component[] comps = parent.getComponents();
+            int importIdx = -1;
+            int exportIdx = -1;
+            for (int i = 0; i < comps.length; i++) {
+                if (comps[i] == btnImport) importIdx = i;
+                if (comps[i] == btnExport) exportIdx = i;
+            }
+
+            assertTrue(importIdx >= 0, "btnImport must be in parent container");
+            assertTrue(exportIdx >= 0, "btnExport must be in parent container");
+            assertTrue(importIdx < exportIdx, "btnImport must be placed to the left of btnExport (index " + importIdx + " < " + exportIdx + ")");
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    @Test
+    @DisplayName("importConfigFile updates Settings and refreshes SettingsDialog controls")
+    public void testImportConfigFileUpdatesSettingsAndDialog() throws IOException {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        File tempIni = File.createTempFile("j3270_test_import", ".ini");
+        try {
+            try (FileWriter writer = new FileWriter(tempIni)) {
+                writer.write("[appearance]\n");
+                writer.write("fontSize = 24\n");
+                writer.write("fontFamily = Monospaced\n");
+                writer.write("\n[behavior]\n");
+                writer.write("startupBehavior = AUTO_CONNECT\n");
+                writer.write("autoConnectHost = testhost.example.org\n");
+                writer.write("autoConnectPort = 2323\n");
+                writer.write("autoConnectAutoReconnect = true\n");
+            }
+
+            SettingsDialog dialog = new SettingsDialog(app);
+            dialog.importConfigFile(tempIni);
+
+            // Verify Settings updated
+            assertEquals(24, Settings.getFontSize());
+            assertEquals("testhost.example.org", Settings.getAutoConnectHost());
+            assertEquals(2323, Settings.getAutoConnectPort());
+            assertTrue(Settings.getAutoConnectAutoReconnect());
+
+            // Verify dialog state reflects the imported values
+            assertEquals(Settings.StartupBehavior.AUTO_CONNECT, Settings.getStartupBehavior());
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        } finally {
+            if (tempIni.exists()) {
+                tempIni.delete();
+            }
+        }
+    }
+
+    @Test
+    @DisplayName("importConfigFile throws FileNotFoundException for nonexistent file")
+    public void testImportNonExistentFileThrows() {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+            File nonExistent = new File("/path/to/nonexistent/file_" + System.currentTimeMillis() + ".ini");
+            assertThrows(FileNotFoundException.class, () -> {
+                dialog.importConfigFile(nonExistent);
+            });
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/ui/SelectionHandlesAndTrimTest.java

@@ -0,0 +1,265 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.j3270.config.Settings;
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.ConnectionState;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.awt.Cursor;
+import java.awt.HeadlessException;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import static haus.nightmare.lib3270j.protocol.DS3270Constants.*;
+import static org.junit.jupiter.api.Assertions.*;
+
+public class SelectionHandlesAndTrimTest {
+
+    private boolean origRemainAfterEdit;
+    private boolean origSizingHandles;
+
+    @BeforeEach
+    public void setUp() {
+        origRemainAfterEdit = Settings.getTrimRectRemainAfterEdit();
+        origSizingHandles = Settings.getTrimRectSizingHandles();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        Settings.setTrimRectRemainAfterEdit(origRemainAfterEdit);
+        Settings.setTrimRectSizingHandles(origSizingHandles);
+    }
+
+    private TerminalPanel createTestPanel() {
+        TerminalPanel panel = new TerminalPanel();
+        panel.setSize(800, 600);
+        panel.cellWidth = 10;
+        panel.cellHeight = 20;
+
+        Telnet3270Client client = new Telnet3270Client(new ConnectionConfig("localhost", 23));
+        client.getTelnetFSM().setConnectionState(ConnectionState.CONNECTED_3270);
+        ScreenBuffer sb = client.getScreenBuffer();
+        sb.erase(false);
+        panel.setClient(client);
+
+        return panel;
+    }
+
+    @Test
+    @DisplayName("Trailing whitespace is trimmed on copied lines in block selection mode")
+    public void testBlockSelectionTrailingWhitespaceTrim() {
+        try {
+            TerminalPanel panel = createTestPanel();
+            ScreenBuffer sb = panel.getClient().getScreenBuffer();
+            int cols = sb.getCols();
+
+            // Populate row 0: "HELLO       "
+            String text0 = "HELLO";
+            for (int i = 0; i < text0.length(); i++) {
+                sb.getCell(i).ucs4 = text0.charAt(i);
+            }
+
+            // Populate row 1: "WORLD 123   "
+            String text1 = "WORLD 123";
+            for (int i = 0; i < text1.length(); i++) {
+                sb.getCell(cols + i).ucs4 = text1.charAt(i);
+            }
+
+            // Select rectangle from (row 0, col 0) to (row 1, col 20)
+            panel.setBlockSelectMode(true);
+            panel.setSelectionRange(0, cols + 20);
+
+            String copied = panel.getSelectedText();
+            // Should be "HELLO\nWORLD 123" without the trailing spaces up to col 20
+            assertEquals("HELLO\nWORLD 123", copied);
+        } catch (HeadlessException ignored) {}
+    }
+
+    @Test
+    @DisplayName("Trailing whitespace is trimmed on copied lines in stream selection mode")
+    public void testStreamSelectionTrailingWhitespaceTrim() {
+        try {
+            TerminalPanel panel = createTestPanel();
+            ScreenBuffer sb = panel.getClient().getScreenBuffer();
+            int cols = sb.getCols();
+
+            // Populate row 0: "LINE1       "
+            String text0 = "LINE1";
+            for (int i = 0; i < text0.length(); i++) {
+                sb.getCell(i).ucs4 = text0.charAt(i);
+            }
+
+            // Populate row 1: "LINE2"
+            String text1 = "LINE2";
+            for (int i = 0; i < text1.length(); i++) {
+                sb.getCell(cols + i).ucs4 = text1.charAt(i);
+            }
+
+            panel.setBlockSelectMode(false);
+            panel.setTrimRectSizingHandles(false);
+            // Select from row 0, col 0 to row 1, col 10
+            panel.setSelectionRange(0, cols + 10);
+
+            String copied = panel.getSelectedText();
+            assertEquals("LINE1\nLINE2", copied);
+        } catch (HeadlessException ignored) {}
+    }
+
+    @Test
+    @DisplayName("Drag handle detection identifies 8 resize handles, MOVE inside box, and NONE outside")
+    public void testDragHandleDetection() {
+        try {
+            TerminalPanel panel = createTestPanel();
+            panel.setBlockSelectMode(true);
+            panel.setTrimRectSizingHandles(true);
+
+            // Without selection, should return NONE
+            assertEquals(TerminalPanel.DragHandle.NONE, panel.getDragHandleAt(100, 100));
+
+            // Select rectangle: rows 2 to 5, cols 10 to 20
+            ScreenBuffer sb = panel.getClient().getScreenBuffer();
+            int cols = sb.getCols();
+            panel.setSelectionRange(2 * cols + 10, 5 * cols + 20);
+
+            int ox = panel.getRenderOffsetX();
+            int oy = panel.getRenderOffsetY();
+            int cw = panel.cellWidth;
+            int ch = panel.cellHeight;
+
+            int x1 = ox + 10 * cw;
+            int y1 = oy + 2 * ch;
+            int x2 = ox + 21 * cw;
+            int y2 = oy + 6 * ch;
+            int xm = (x1 + x2) / 2;
+            int ym = (y1 + y2) / 2;
+
+            // Test 8 handles
+            assertEquals(TerminalPanel.DragHandle.NW, panel.getDragHandleAt(x1, y1));
+            assertEquals(TerminalPanel.DragHandle.N, panel.getDragHandleAt(xm, y1));
+            assertEquals(TerminalPanel.DragHandle.NE, panel.getDragHandleAt(x2, y1));
+            assertEquals(TerminalPanel.DragHandle.E, panel.getDragHandleAt(x2, ym));
+            assertEquals(TerminalPanel.DragHandle.SE, panel.getDragHandleAt(x2, y2));
+            assertEquals(TerminalPanel.DragHandle.S, panel.getDragHandleAt(xm, y2));
+            assertEquals(TerminalPanel.DragHandle.SW, panel.getDragHandleAt(x1, y2));
+            assertEquals(TerminalPanel.DragHandle.W, panel.getDragHandleAt(x1, ym));
+
+            // Test inside box -> MOVE
+            assertEquals(TerminalPanel.DragHandle.MOVE, panel.getDragHandleAt(xm, ym));
+
+            // Test far outside -> NONE
+            assertEquals(TerminalPanel.DragHandle.NONE, panel.getDragHandleAt(0, 0));
+            assertEquals(TerminalPanel.DragHandle.NONE, panel.getDragHandleAt(x2 + 50, y2 + 50));
+        } catch (HeadlessException ignored) {}
+    }
+
+    @Test
+    @DisplayName("Cursor mapping for all drag handles")
+    public void testCursorForDragHandles() {
+        try {
+            TerminalPanel panel = createTestPanel();
+            assertEquals(Cursor.NW_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.NW).getType());
+            assertEquals(Cursor.N_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.N).getType());
+            assertEquals(Cursor.NE_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.NE).getType());
+            assertEquals(Cursor.E_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.E).getType());
+            assertEquals(Cursor.SE_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.SE).getType());
+            assertEquals(Cursor.S_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.S).getType());
+            assertEquals(Cursor.SW_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.SW).getType());
+            assertEquals(Cursor.W_RESIZE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.W).getType());
+            assertEquals(Cursor.MOVE_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.MOVE).getType());
+            assertEquals(Cursor.DEFAULT_CURSOR, panel.getCursorForDragHandle(TerminalPanel.DragHandle.NONE).getType());
+        } catch (HeadlessException ignored) {}
+    }
+
+    @Test
+    @DisplayName("trimRectRemainAfterEdit controls whether selection is retained after copy")
+    public void testTrimRectRemainAfterEdit() {
+        try {
+            TerminalPanel panel = createTestPanel();
+            ScreenBuffer sb = panel.getClient().getScreenBuffer();
+
+            sb.getCell(0).ucs4 = 'A';
+            panel.setSelectionRange(0, 5);
+            assertTrue(panel.hasSelection());
+
+            // By default (false), copySelection() should clear the selection
+            Settings.setTrimRectRemainAfterEdit(false);
+            panel.copySelection();
+            assertFalse(panel.hasSelection(), "Selection should be cleared after copy when remainAfterEdit is false");
+
+            // When set to true, copySelection() should preserve the selection
+            Settings.setTrimRectRemainAfterEdit(true);
+            panel.setSelectionRange(0, 5);
+            assertTrue(panel.hasSelection());
+            panel.copySelection();
+            assertTrue(panel.hasSelection(), "Selection should remain active after copy when remainAfterEdit is true");
+        } catch (HeadlessException ignored) {}
+    }
+
+    @Test
+    @DisplayName("cutSelection clears unprotected cells, sets FA_MODIFY, and respects remainAfterEdit")
+    public void testCutSelectionBehavior() {
+        try {
+            TerminalPanel panel = createTestPanel();
+            ScreenBuffer sb = panel.getClient().getScreenBuffer();
+
+            // Field at 0: Unprotected field
+            sb.setCellFA(0, (byte) (FA_PRINTABLE | FA_MODIFY));
+            String data = "TESTDATA";
+            for (int i = 0; i < data.length(); i++) {
+                sb.getCell(1 + i).ucs4 = data.charAt(i);
+            }
+
+            // Select the field contents
+            panel.setSelectionRange(1, 8);
+            assertTrue(panel.hasSelection());
+
+            Settings.setTrimRectRemainAfterEdit(false);
+            panel.cutSelection();
+
+            // Characters should be replaced with spaces
+            for (int i = 1; i <= 8; i++) {
+                assertEquals(' ', sb.getCell(i).ucs4, "Cell " + i + " should be erased to space");
+            }
+            // FA_MODIFY should remain or be set
+            assertTrue((sb.getCell(0).ec & FA_MODIFY) != 0, "FA_MODIFY should be set on field attribute");
+            assertFalse(panel.hasSelection(), "Selection should be cleared when remainAfterEdit is false");
+        } catch (HeadlessException ignored) {}
+    }
+
+    @Test
+    @DisplayName("KeyBindings exportKmp generates HoD format and round-trips through parseKmp")
+    public void testKeyBindingsExportAndParseRoundTrip() throws Exception {
+        Map<String, String> keymap = new LinkedHashMap<>();
+        keymap.put("ENTER", "ENTER");
+        keymap.put("shift TAB", "TAB");
+        keymap.put("CLEAR", "PAUSE");
+        keymap.put("PF1", "F1");
+        keymap.put("PF13", "shift F1");
+        keymap.put("ESCAPE", "ESCAPE");
+
+        StringWriter writer = new StringWriter();
+        KeyBindings.exportKmp(writer, keymap);
+        String exported = writer.toString();
+
+        assertTrue(exported.contains("[KeyRemap]"), "Exported KMP must contain [KeyRemap] section header");
+        assertTrue(exported.contains("[enter]"), "Exported KMP must contain HoD mnemonics");
+        assertTrue(exported.contains("[backtab]"), "Exported KMP must contain [backtab]");
+
+        // Roundtrip parse
+        Map<String, String> parsed = KeyBindings.parseKmp(new StringReader(exported));
+        assertNotNull(parsed);
+        assertEquals("ENTER", parsed.get("ENTER"));
+        assertEquals("TAB", parsed.get("shift TAB"));
+        assertEquals("PAUSE", parsed.get("CLEAR"));
+        assertEquals("F1", parsed.get("PF1"));
+        assertEquals("shift F1", parsed.get("PF13"));
+        assertEquals("ESCAPE", parsed.get("ESCAPE"));
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/ui/StatusBarTest.java

@@ -59,4 +59,49 @@ public class StatusBarTest {
             // Ignored in headless environments
         }
     }
+
+    @Test
+    public void testStatusBarXSystemAndXProt() {
+        try {
+            ConnectionConfig config = new ConnectionConfig("mvs.example.com", 23, TerminalModel.IBM_3279_2, false);
+            Telnet3270Client client = new Telnet3270Client(config);
+            client.getTelnetFSM().setConnectionState(haus.nightmare.lib3270j.ConnectionState.CONNECTED_3270);
+
+            StatusBar statusBar = new StatusBar();
+            statusBar.setClient(client, null);
+            statusBar.updateStatus();
+
+            // Initially not locked
+            assertEquals("", statusBar.getLockStatusText());
+
+            // 1. Setup protected field and type into it -> triggers X PROT
+            client.getScreenBuffer().setFieldAttribute(0, (byte) haus.nightmare.lib3270j.protocol.DS3270Constants.FA_PROTECT);
+            client.getScreenBuffer().setCursorAddress(1);
+            client.typeCharacter('A');
+            statusBar.updateStatus();
+            assertEquals("X PROT", statusBar.getLockStatusText());
+
+            // 2. Reset -> clears X PROT
+            client.reset();
+            statusBar.updateStatus();
+            assertEquals("", statusBar.getLockStatusText());
+
+            // 3. Send Enter -> triggers X SYSTEM
+            client.sendEnter();
+            statusBar.updateStatus();
+            assertEquals("X SYSTEM", statusBar.getLockStatusText());
+
+            // 4. Host unlocks keyboard
+            client.getInputProcessor().setKeyboardLocked(false);
+            statusBar.updateStatus();
+            assertEquals("", statusBar.getLockStatusText());
+
+            // 5. Subsequent Enter -> triggers X SYSTEM again
+            client.sendEnter();
+            statusBar.updateStatus();
+            assertEquals("X SYSTEM", statusBar.getLockStatusText());
+        } catch (HeadlessException e) {
+            // Ignored in headless environments
+        }
+    }
 }

j3270/src/test/java/haus/nightmare/j3270/ui/TerminalPanelSelectionTest.java

@@ -0,0 +1,101 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.ConnectionState;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.awt.HeadlessException;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.awt.event.MouseMotionListener;
+
+import static haus.nightmare.lib3270j.protocol.DS3270Constants.*;
+import static org.junit.jupiter.api.Assertions.*;
+
+public class TerminalPanelSelectionTest {
+
+    @Test
+    @DisplayName("Selection drag over protected/intensified fields is preserved on mouse release (Bugs 3 & 4)")
+    public void testSelectionOverProtectedFieldsAndReleasePreservation() {
+        try {
+            TerminalPanel panel = new TerminalPanel();
+            panel.setSize(800, 600);
+
+            Telnet3270Client client = new Telnet3270Client(new ConnectionConfig("localhost", 23));
+            client.getTelnetFSM().setConnectionState(ConnectionState.CONNECTED_3270);
+
+            ScreenBuffer sb = client.getScreenBuffer();
+            sb.erase(false);
+
+            // Put a protected, intensified selectable field at pos 0 (ISPF header simulation)
+            sb.setCellFA(0, (byte) (FA_PRINTABLE | FA_PROTECT | FA_INT_HIGH_SEL));
+            String headerText = " ISPF PRIMARY OPTION MENU";
+            for (int i = 0; i < headerText.length(); i++) {
+                sb.getCell(1 + i).ucs4 = headerText.charAt(i);
+                sb.getCell(1 + i).ec = (byte) (0x40 + i);
+            }
+
+            panel.setClient(client);
+
+            // Cell dimensions in panel
+            int cellW = panel.cellWidth > 0 ? panel.cellWidth : 10;
+            int cellH = panel.cellHeight > 0 ? panel.cellHeight : 18;
+            int ox = panel.getRenderOffsetX();
+            int oy = panel.getRenderOffsetY();
+
+            MouseListener[] mouseListeners = panel.getMouseListeners();
+            MouseMotionListener[] motionListeners = panel.getMouseMotionListeners();
+            assertTrue(mouseListeners.length > 0);
+            assertTrue(motionListeners.length > 0);
+
+            MouseListener ml = mouseListeners[0];
+            MouseMotionListener mml = motionListeners[0];
+
+            // 1. Mouse Pressed at cell (row 0, col 2)
+            int startX = ox + 2 * cellW + cellW / 2;
+            int startY = oy + cellH / 2;
+            MouseEvent pressEvent = new MouseEvent(panel, MouseEvent.MOUSE_PRESSED, System.currentTimeMillis(),
+                    0, startX, startY, 1, false, MouseEvent.BUTTON1);
+            ml.mousePressed(pressEvent);
+
+            // 2. Drag to cell (row 0, col 15)
+            int dragX = ox + 15 * cellW + cellW / 2;
+            int dragY = oy + cellH / 2;
+            MouseEvent dragEvent = new MouseEvent(panel, MouseEvent.MOUSE_DRAGGED, System.currentTimeMillis(),
+                    0, dragX, dragY, 1, false, MouseEvent.BUTTON1);
+            mml.mouseDragged(dragEvent);
+
+            assertTrue(panel.hasSelection(), "Drag over protected field must create active selection (Bug 3)");
+
+            // 3. Mouse Released at cell (row 0, col 15)
+            MouseEvent releaseEvent = new MouseEvent(panel, MouseEvent.MOUSE_RELEASED, System.currentTimeMillis(),
+                    0, dragX, dragY, 1, false, MouseEvent.BUTTON1);
+            ml.mouseReleased(releaseEvent);
+
+            // Selection MUST NOT be dropped upon mouse release! (Bug 4)
+            assertTrue(panel.hasSelection(), "Selection must remain active after mouse release (Bug 4)");
+            String selected = panel.getSelectedText();
+            assertNotNull(selected);
+            assertTrue(selected.length() > 0, "Selected text must not be empty");
+
+            // 4. A subsequent single click without drag should clear the selection and move the cursor
+            int clickX = ox + 5 * cellW + cellW / 2;
+            int clickY = oy + cellH / 2;
+            MouseEvent clickPress = new MouseEvent(panel, MouseEvent.MOUSE_PRESSED, System.currentTimeMillis(),
+                    0, clickX, clickY, 1, false, MouseEvent.BUTTON1);
+            ml.mousePressed(clickPress);
+            MouseEvent clickRelease = new MouseEvent(panel, MouseEvent.MOUSE_RELEASED, System.currentTimeMillis(),
+                    0, clickX, clickY, 1, false, MouseEvent.BUTTON1);
+            ml.mouseReleased(clickRelease);
+
+            assertFalse(panel.hasSelection(), "Single click must clear previous selection");
+            assertEquals(5, sb.getCursorAddress(), "Single click must position cursor at clicked cell");
+
+        } catch (HeadlessException e) {
+            // Handled gracefully in headless environments
+        }
+    }
+}

j3270/src/test/java/haus/nightmare/j3270/ui/ThemeManagerTest.java

@@ -262,4 +262,81 @@ public class ThemeManagerTest {
             // Handled in headless CI
         }
     }
+
+    @Test
+    public void testUiFontRetrievalAndDefaults() {
+        String prevFamily = Settings.getUiFontFamily();
+        int prevSize = Settings.getUiFontSize();
+
+        try {
+            Settings.setUiFontFamily("Dialog");
+            Settings.setUiFontSize(16);
+
+            Font uiFont = ThemeManager.getUiFont();
+            assertEquals("Dialog", uiFont.getFamily());
+            assertEquals(16, uiFont.getSize());
+            assertEquals(Font.PLAIN, uiFont.getStyle());
+
+            Font boldOffset = ThemeManager.getUiFont(Font.BOLD, 2);
+            assertEquals(18, boldOffset.getSize());
+            assertEquals(Font.BOLD, boldOffset.getStyle());
+
+            Font monoFont = ThemeManager.getMonospacedUiFont();
+            assertEquals(Font.MONOSPACED, monoFont.getName());
+            assertEquals(16, monoFont.getSize());
+
+            // Test applyUIManagerDefaults sets font properties
+            ThemeManager.applyUIManagerDefaults(UITheme.DARK);
+            assertEquals(uiFont, UIManager.get("Button.font"));
+            assertEquals(uiFont, UIManager.get("Label.font"));
+            assertEquals(uiFont, UIManager.get("Menu.font"));
+            assertEquals(uiFont, UIManager.get("Table.font"));
+            assertEquals(monoFont, UIManager.get("TextArea.font"));
+        } finally {
+            Settings.setUiFontFamily(prevFamily);
+            Settings.setUiFontSize(prevSize);
+            ThemeManager.applyUIManagerDefaults(UITheme.DARK);
+        }
+    }
+
+    @Test
+    public void testLabelFontNotIncrementedOnRepeatedThemeApplication() {
+        String prevFamily = Settings.getUiFontFamily();
+        int prevSize = Settings.getUiFontSize();
+
+        try {
+            Settings.setUiFontFamily("Dialog");
+            Settings.setUiFontSize(16);
+            ThemeManager.applyUIManagerDefaults(UITheme.DARK);
+
+            JLabel label = new JLabel("Settings Label");
+            ThemeManager.applyTheme(label);
+            assertEquals(16, label.getFont().getSize(), "Initial label font size must match configured uiFontSize");
+
+            // Repeated theme applications (e.g. subsequent clicks of 'Apply' in Settings dialog)
+            // must never increment font size
+            for (int i = 1; i <= 5; i++) {
+                ThemeManager.applyTheme(label);
+                assertEquals(16, label.getFont().getSize(),
+                        "Label font size must remain 16 on subsequent application #" + i);
+            }
+
+            // Test label with custom delta
+            JLabel headerLabel = new JLabel("Header Label");
+            headerLabel.setFont(ThemeManager.getUiFont(Font.BOLD, 3));
+            headerLabel.putClientProperty("uiFontSizeDelta", 3);
+            ThemeManager.applyTheme(headerLabel);
+            assertEquals(19, headerLabel.getFont().getSize(), "Custom header label should have base + 3 size");
+
+            for (int i = 1; i <= 5; i++) {
+                ThemeManager.applyTheme(headerLabel);
+                assertEquals(19, headerLabel.getFont().getSize(),
+                        "Header label font size must remain 19 on subsequent application #" + i);
+            }
+        } finally {
+            Settings.setUiFontFamily(prevFamily);
+            Settings.setUiFontSize(prevSize);
+            ThemeManager.applyUIManagerDefaults(UITheme.DARK);
+        }
+    }
 }

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLCommEvent.java

@@ -0,0 +1,45 @@
+package com.ibm.eNetwork.ECL;
+
+import com.ibm.eNetwork.ECL.event.ECLEvent;
+
+/**
+ * Communications event matching IBM Host On-Demand ECLCommEvent.
+ */
+public class ECLCommEvent extends ECLEvent {
+
+    private final boolean status;
+    private final int eventType;
+
+    public ECLCommEvent(Object object, boolean status) {
+        super(object);
+        this.status = status;
+        this.eventType = status ? 1 : 2;
+    }
+
+    public ECLCommEvent(Object object, int eventType, boolean status) {
+        super(object);
+        this.eventType = eventType;
+        this.status = status;
+    }
+
+    public boolean connected() {
+        return this.status;
+    }
+
+    public boolean isConnected() {
+        return this.status;
+    }
+
+    public int getEventType() {
+        return this.eventType;
+    }
+
+    public ECLConnection GetConnection() {
+        Object src = GetSource();
+        if (src instanceof ECLConnection) return (ECLConnection) src;
+        if (src instanceof haus.nightmare.lib3270j.ecl.ECLConnection) {
+            return new ECLConnection((haus.nightmare.lib3270j.ecl.ECLConnection) src);
+        }
+        return null;
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLCommNotify.java

@@ -0,0 +1,10 @@
+package com.ibm.eNetwork.ECL;
+
+/**
+ * Communications notification interface matching IBM Host On-Demand ECLCommNotify.
+ */
+public interface ECLCommNotify {
+    void NotifyEvent(ECLConnection conn, boolean connected);
+    default void NotifyStop(ECLConnection conn, int reason) {}
+    default void NotifyError(ECLConnection conn, ECLErr err) {}
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLConnection.java

@@ -0,0 +1,79 @@
+package com.ibm.eNetwork.ECL;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Properties;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+/**
+ * Communications and connection management facade matching IBM Host On-Demand ECLConnection.
+ */
+public class ECLConnection extends haus.nightmare.lib3270j.ecl.ECLConnection implements ECLConstants {
+
+    private final List<ECLCommNotify> commNotifies = new CopyOnWriteArrayList<>();
+
+    public ECLConnection() {
+        super();
+        setupListener();
+    }
+
+    public ECLConnection(Properties props) {
+        super(props);
+        setupListener();
+    }
+
+    public ECLConnection(String host, int port) {
+        super(host, port);
+        setupListener();
+    }
+
+    public ECLConnection(haus.nightmare.lib3270j.ecl.ECLSession session) {
+        super(session);
+        setupListener();
+    }
+
+    public ECLConnection(haus.nightmare.lib3270j.ecl.ECLConnection delegate) {
+        super(delegate != null ? delegate.getSession() : null);
+        setupListener();
+    }
+
+    private void setupListener() {
+        RegisterCommEvent(new haus.nightmare.lib3270j.ecl.ECLCommListener() {
+            @Override
+            public void CommNotifyEvent(haus.nightmare.lib3270j.ecl.ECLCommEvent event) {
+                boolean conn = event != null && event.isConnected();
+                for (ECLCommNotify n : commNotifies) {
+                    try {
+                        n.NotifyEvent(ECLConnection.this, conn);
+                    } catch (Exception ignored) {}
+                }
+            }
+        });
+    }
+
+    public void RegisterCommEvent(ECLCommNotify notify) {
+        if (notify != null && !commNotifies.contains(notify)) {
+            commNotifies.add(notify);
+        }
+    }
+
+    public void registerCommEvent(ECLCommNotify notify) { RegisterCommEvent(notify); }
+
+    public void UnregisterCommEvent(ECLCommNotify notify) {
+        if (notify != null) {
+            commNotifies.remove(notify);
+        }
+    }
+
+    public void unregisterCommEvent(ECLCommNotify notify) { UnregisterCommEvent(notify); }
+
+    @Override
+    public void StartCommunication() throws IOException {
+        super.StartCommunication();
+    }
+
+    @Override
+    public void StopCommunication() {
+        super.StopCommunication();
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLConstants.java

@@ -0,0 +1,138 @@
+package com.ibm.eNetwork.ECL;
+
+/**
+ * IBM Host Access Class Library (HACL) common constants.
+ * Conforms 1:1 to IBM Host On-Demand com.ibm.eNetwork.ECL.ECLConstants.
+ */
+public interface ECLConstants extends haus.nightmare.lib3270j.ecl.ECLConstants {
+
+    // Presentation space logical planes (HoD bitmask values)
+    int TEXT_PLANE              = 1;
+    int COLOR_PLANE             = 2;
+    int DBCS_PLANE              = 4;
+    int GRID_PLANE              = 8;
+    int FIELD_PLANE             = 16;
+    int EXFIELD_PLANE           = 32;
+    int NLS_PLANE               = 64;
+    int HOST_PLANE              = 128;
+    int RAWTEXT_PLANE           = 256;
+    int COLOR_ATTRIBUTES_PLANE  = 512;
+    int ALL_PLANES              = 319;
+
+    // Search directions
+    int SEARCH_FORWARD          = 1;
+    int SEARCH_BACKWARD         = 2;
+
+    // Field filters
+    int ALL_FIELDS              = 0;
+    int MODIFIED_FIELD          = 1;
+    int ALPHANUM_FIELD          = 2;
+    int HILIGHT_FIELD           = 16;
+    int PROTECTED_FIELD         = 32;
+    int DISPLAYABLE_FIELD       = 64;
+    int PENDETECTABLE_FIELD     = 128;
+    int UNMODIFIED_FIELD        = 256;
+    int NUMERIC_FIELD           = 512;
+    int LOLIGHT_FIELD           = 4096;
+    int UNPROTECTED_FIELD       = 8192;
+    int NON_DISPLAYABLE_FIELD   = 16384;
+    int NON_PENDETECTABLE_FIELD = 32768;
+
+    // Standard Mnemonics Constants
+    String ENTER_STR            = "[enter]";
+    String CLEAR_STR            = "[clear]";
+    String RESET_STR            = "[reset]";
+    String TAB_STR              = "[tab]";
+    String FWDTAB_STR           = "[tab]";
+    String BACKTAB_STR          = "[backtab]";
+    String BACKSP_STR           = "[backspace]";
+    String DELCHAR_STR          = "[delete]";
+    String INSERT_STR           = "[insert]";
+    String HOME_STR             = "[home]";
+    String NEWLINE_STR          = "[newline]";
+    String ENDLINE_STR          = "[eof]";
+    String ERASEEOF_STR         = "[eraseeof]";
+    String ERASEFLD_STR         = "[erasefld]";
+    String ERASEINPUT_STR       = "[erinp]";
+    String ATTN_STR             = "[attn]";
+    String SYSREQ_STR           = "[sysreq]";
+    String DUP_STR              = "[dup]";
+    String FLDMRK_STR           = "[fieldmark]";
+    String PA1_STR              = "[pa1]";
+    String PA2_STR              = "[pa2]";
+    String PA3_STR              = "[pa3]";
+    String CURUP_STR            = "[up]";
+    String CURDOWN_STR          = "[down]";
+    String CURLEFT_STR          = "[left]";
+    String CURRIGHT_STR         = "[right]";
+    String PAGEUP_STR           = "[pageup]";
+    String PAGEDWN_STR          = "[pagedn]";
+    String COPY_STR             = "[copy]";
+    String PASTE_STR            = "[paste]";
+    String CUT_STR              = "[cut]";
+    String SELECTALL_STR        = "[selectall]";
+
+    // Function keys F1 - F24
+    String F1_STR  = "[pf1]";
+    String F2_STR  = "[pf2]";
+    String F3_STR  = "[pf3]";
+    String F4_STR  = "[pf4]";
+    String F5_STR  = "[pf5]";
+    String F6_STR  = "[pf6]";
+    String F7_STR  = "[pf7]";
+    String F8_STR  = "[pf8]";
+    String F9_STR  = "[pf9]";
+    String F10_STR = "[pf10]";
+    String F11_STR = "[pf11]";
+    String F12_STR = "[pf12]";
+    String F13_STR = "[pf13]";
+    String F14_STR = "[pf14]";
+    String F15_STR = "[pf15]";
+    String F16_STR = "[pf16]";
+    String F17_STR = "[pf17]";
+    String F18_STR = "[pf18]";
+    String F19_STR = "[pf19]";
+    String F20_STR = "[pf20]";
+    String F21_STR = "[pf21]";
+    String F22_STR = "[pf22]";
+    String F23_STR = "[pf23]";
+    String F24_STR = "[pf24]";
+
+    // Shift F1 - F24
+    String SHIFT_F1_STR  = "[Spf1]";
+    String SHIFT_F2_STR  = "[Spf2]";
+    String SHIFT_F3_STR  = "[Spf3]";
+    String SHIFT_F4_STR  = "[Spf4]";
+    String SHIFT_F5_STR  = "[Spf5]";
+    String SHIFT_F6_STR  = "[Spf6]";
+    String SHIFT_F7_STR  = "[Spf7]";
+    String SHIFT_F8_STR  = "[Spf8]";
+    String SHIFT_F9_STR  = "[Spf9]";
+    String SHIFT_F10_STR = "[Spf10]";
+    String SHIFT_F11_STR = "[Spf11]";
+    String SHIFT_F12_STR = "[Spf12]";
+    String SHIFT_F13_STR = "[Spf13]";
+    String SHIFT_F14_STR = "[Spf14]";
+    String SHIFT_F15_STR = "[Spf15]";
+    String SHIFT_F16_STR = "[Spf16]";
+    String SHIFT_F17_STR = "[Spf17]";
+    String SHIFT_F18_STR = "[Spf18]";
+    String SHIFT_F19_STR = "[Spf19]";
+    String SHIFT_F20_STR = "[Spf20]";
+
+    // Field attributes
+    short ATTR_PROTECTED = 32;
+    short ATTR_ALPHANUM  = 16;
+    short ATTR_DISPLAY1  = 8;
+    short ATTR_DISPLAY2  = 4;
+    short ATTR_MDT       = 1;
+
+    // Extended attributes
+    short EXT_ATTR_3270_UNDERLINE = 192;
+    short EXT_ATTR_3270_REVERSE   = 128;
+    short EXT_ATTR_3270_BLINK     = 64;
+    short EXT_ATTR_3270_EBCDIC    = 0;
+
+    // Timeout
+    int NO_TIMEOUT = -1;
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLErr.java

@@ -0,0 +1,54 @@
+package com.ibm.eNetwork.ECL;
+
+/**
+ * IBM Host Access Class Library (HACL) ECLErr checked exception facade.
+ * Conforms 1:1 to IBM Host On-Demand com.ibm.eNetwork.ECL.ECLErr.
+ */
+public class ECLErr extends haus.nightmare.lib3270j.ecl.ECLErr {
+
+    private static final long serialVersionUID = 1L;
+
+    public ECLErr() {
+        super();
+    }
+
+    public ECLErr(String text) {
+        super(text);
+    }
+
+    public ECLErr(String location, String msgNum) {
+        super(location, msgNum);
+    }
+
+    public ECLErr(String location, String msgNum, String insert) {
+        super(location, msgNum, insert);
+    }
+
+    public ECLErr(String location, String msgNum, String insert1, String insert2) {
+        super(location, msgNum, insert1, insert2);
+    }
+
+    public ECLErr(String location, String msgNum, String insert1, String insert2, boolean log) {
+        super(location, msgNum, insert1, insert2, log);
+    }
+
+    public ECLErr(String location, String msgNum, String insert1, String insert2, String insert3) {
+        super(location, msgNum, insert1, insert2, insert3);
+    }
+
+    public ECLErr(String location, String msgNum, int reasonCode) {
+        super(location, msgNum, reasonCode);
+    }
+
+    public ECLErr(String location, String msgNum, String insert1, int reasonCode) {
+        super(location, msgNum, insert1, reasonCode);
+    }
+
+    public ECLErr(Throwable cause) {
+        super(cause);
+    }
+
+    public ECLErr(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLField.java

@@ -0,0 +1,137 @@
+package com.ibm.eNetwork.ECL;
+
+/**
+ * Discrete 3270 field facade matching IBM Host On-Demand ECLField.
+ */
+public class ECLField extends haus.nightmare.lib3270j.ecl.ECLField implements ECLConstants {
+
+    private final haus.nightmare.lib3270j.ecl.ECLField delegate;
+
+    public ECLField(haus.nightmare.lib3270j.ecl.ECLField delegate) {
+        super(delegate != null ? delegate.getPS() : null,
+              delegate != null ? delegate.getStart() : 0,
+              delegate != null ? delegate.getDataStart() : 0,
+              delegate != null ? delegate.getEnd() : 0,
+              delegate != null ? delegate.getLength() : 0,
+              (byte) (delegate != null ? delegate.getAttribute() : 0));
+        this.delegate = delegate;
+    }
+
+    public int GetStart() {
+        return delegate != null ? delegate.GetStart() + 1 : 1;
+    }
+
+    public int getStart() { return GetStart(); }
+
+    public int GetStartRow() {
+        return delegate != null ? delegate.GetStartRow() + 1 : 1;
+    }
+
+    public int getStartRow() { return GetStartRow(); }
+
+    public int GetStartCol() {
+        return delegate != null ? delegate.GetStartCol() + 1 : 1;
+    }
+
+    public int getStartCol() { return GetStartCol(); }
+
+    public int GetEnd() {
+        return delegate != null ? delegate.GetEnd() + 1 : 1;
+    }
+
+    public int getEnd() { return GetEnd(); }
+
+    public int GetEndRow() {
+        return delegate != null ? delegate.GetEndRow() + 1 : 1;
+    }
+
+    public int getEndRow() { return GetEndRow(); }
+
+    public int GetEndCol() {
+        return delegate != null ? delegate.GetEndCol() + 1 : 1;
+    }
+
+    public int getEndCol() { return GetEndCol(); }
+
+    public int GetLength() {
+        return delegate != null ? delegate.GetLength() : 0;
+    }
+
+    public int getLength() { return GetLength(); }
+
+    public String GetString() {
+        return delegate != null ? delegate.getString() : "";
+    }
+
+    public String getString() { return GetString(); }
+
+    public int GetString(char[] buffer, int len) throws ECLErr {
+        if (buffer == null) throw new ECLErr("ECLField:GetString", "ECL0011", "1");
+        String text = GetString();
+        int count = Math.min(len, Math.min(buffer.length, text.length()));
+        for (int i = 0; i < count; i++) {
+            buffer[i] = text.charAt(i);
+        }
+        return count;
+    }
+
+    public void SetString(String text) throws ECLErr {
+        if (delegate != null) {
+            delegate.setText(text);
+        }
+    }
+
+    public void SetText(String text) throws ECLErr {
+        SetString(text);
+    }
+
+    public void setText(String text) {
+        if (delegate != null) {
+            delegate.setText(text);
+        }
+    }
+
+    public boolean IsModified() {
+        return delegate != null && delegate.isModified();
+    }
+
+    public boolean isModified() { return IsModified(); }
+
+    public boolean IsProtected() {
+        return delegate != null && delegate.isProtected();
+    }
+
+    public boolean isProtected() { return IsProtected(); }
+
+    public boolean IsNumeric() {
+        return delegate != null && delegate.isNumeric();
+    }
+
+    public boolean isNumeric() { return IsNumeric(); }
+
+    public boolean IsHighIntensity() {
+        return delegate != null && delegate.isHighIntensity();
+    }
+
+    public boolean isHighIntensity() { return IsHighIntensity(); }
+
+    public boolean IsPenDetectable() {
+        return delegate != null && delegate.isPenDetectable();
+    }
+
+    public boolean isPenDetectable() { return IsPenDetectable(); }
+
+    public boolean IsDisplay() {
+        return delegate != null && delegate.isDisplay();
+    }
+
+    public boolean isDisplay() { return IsDisplay(); }
+
+    public short GetAttribute() {
+        return delegate != null ? (short) (delegate.getAttribute() & 0xFF) : 0;
+    }
+
+    public short getAttribute() { return GetAttribute(); }
+
+    public haus.nightmare.lib3270j.ecl.ECLField getDelegate() { return delegate; }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLFieldList.java

@@ -0,0 +1,113 @@
+package com.ibm.eNetwork.ECL;
+
+import java.util.Vector;
+
+/**
+ * Collection of 3270 fields matching IBM Host On-Demand ECLFieldList.
+ */
+public class ECLFieldList extends Vector<ECLField> implements ECLConstants {
+
+    private static final long serialVersionUID = 1L;
+
+    private final haus.nightmare.lib3270j.ecl.ECLFieldList delegate;
+    private final ECLPS ps;
+
+    public ECLFieldList(haus.nightmare.lib3270j.ecl.ECLFieldList delegate, ECLPS ps) {
+        this.delegate = delegate;
+        this.ps = ps;
+        refreshFields();
+    }
+
+    public ECLFieldList(haus.nightmare.lib3270j.ecl.ECLFieldList delegate) {
+        this(delegate, null);
+    }
+
+    private void refreshFields() {
+        clear();
+        if (delegate != null) {
+            delegate.refresh();
+            for (haus.nightmare.lib3270j.ecl.ECLField f : delegate.getFields()) {
+                add(new ECLField(f));
+            }
+        }
+    }
+
+    public void Refresh() {
+        refreshFields();
+    }
+
+    public void Refresh(int planes) throws ECLErr {
+        refreshFields();
+    }
+
+    public void refresh() {
+        refreshFields();
+    }
+
+    public int GetFieldCount() {
+        return size();
+    }
+
+    public int getFieldCount() { return GetFieldCount(); }
+
+    public ECLField GetFirstField() {
+        return GetFirstField(0);
+    }
+
+    public ECLField GetFirstField(int filter) {
+        for (ECLField f : this) {
+            if (matchesFilter(f, filter)) return f;
+        }
+        return null;
+    }
+
+    public ECLField GetNextField(ECLField current) {
+        return GetNextField(current, 0);
+    }
+
+    public ECLField GetNextField(ECLField current, int filter) {
+        if (current == null) return GetFirstField(filter);
+        int idx = indexOf(current);
+        if (idx >= 0) {
+            for (int i = idx + 1; i < size(); i++) {
+                ECLField f = get(i);
+                if (matchesFilter(f, filter)) return f;
+            }
+        }
+        return null;
+    }
+
+    public ECLField FindField(int pos) throws ECLErr {
+        if (ps != null && (pos < 1 || pos > ps.GetSize())) {
+            throw new ECLErr("ECLFieldList:FindField", "ECL0010", "1", String.valueOf(pos));
+        }
+        for (ECLField f : this) {
+            int start = f.GetStart();
+            int end = f.GetEnd();
+            if (start <= end) {
+                if (pos >= start && pos <= end) return f;
+            } else {
+                // Wrapped field
+                if (pos >= start || pos <= end) return f;
+            }
+        }
+        return null;
+    }
+
+    public ECLField FindField(int row, int col) throws ECLErr {
+        if (ps == null) return null;
+        int pos = ps.ConvertRowColToPos(row, col);
+        return FindField(pos);
+    }
+
+    private boolean matchesFilter(ECLField f, int filter) {
+        if (filter == 0 || filter == ALL_FIELDS) return true;
+        if ((filter & MODIFIED_FIELD) != 0 && !f.IsModified()) return false;
+        if ((filter & PROTECTED_FIELD) != 0 && !f.IsProtected()) return false;
+        if ((filter & UNPROTECTED_FIELD) != 0 && f.IsProtected()) return false;
+        if ((filter & NUMERIC_FIELD) != 0 && !f.IsNumeric()) return false;
+        if ((filter & HILIGHT_FIELD) != 0 && !f.IsHighIntensity()) return false;
+        if ((filter & DISPLAYABLE_FIELD) != 0 && !f.IsDisplay()) return false;
+        return true;
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLHostPrintSession.java

@@ -0,0 +1,39 @@
+package com.ibm.eNetwork.ECL;
+
+import java.util.Properties;
+
+/**
+ * Host Print Session facade matching IBM Host On-Demand ECLHostPrintSession.
+ */
+public class ECLHostPrintSession extends ECLSession {
+
+    public static final String SESSION_PRINT_SESSION_LABEL_DEFAULT = "";
+    public static final String SESSION_PRINT_SESSION_TYPE_DEFAULT = "5";
+    public static final String SESSION_PRINT_SESSION_HOST_DEFAULT = "";
+    public static final String SESSION_PRINT_SESSION_HOST_PORT_DEFAULT = "23";
+    public static final String SESSION_PRINT_SESSION_LU_NAME_DEFAULT = "";
+    public static final String SESSION_PRINT_SESSION_AUTOCONNECT_DEFAULT = "true";
+    public static final String SESSION_PRINT_SESSION_AUTORECONNECT_DEFAULT = "true";
+    public static final String SESSION_LU_TYPE = "printerLUType";
+
+    public ECLHostPrintSession(Properties properties) throws ECLErr {
+        super(properties);
+    }
+
+    public ECLHostPrintSession() throws ECLErr {
+        super();
+    }
+
+    public void cancelPrintJob() {
+        ECLPS ps = GetPS();
+        if (ps != null) {
+            try {
+                ps.SendKeys("[cancelpjob]");
+            } catch (Exception ignored) {}
+        }
+    }
+
+    public void CancelPrintJob() {
+        cancelPrintJob();
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLOIA.java

@@ -0,0 +1,130 @@
+package com.ibm.eNetwork.ECL;
+
+import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+/**
+ * Operator Information Area facade matching IBM Host On-Demand ECLOIA.
+ */
+public class ECLOIA implements ECLConstants {
+
+    private final haus.nightmare.lib3270j.ecl.ECLOIA delegate;
+    private final List<ECLOIANotify> oiaNotifies = new CopyOnWriteArrayList<>();
+
+    public ECLOIA(haus.nightmare.lib3270j.ecl.ECLOIA delegate) {
+        this.delegate = delegate;
+        if (delegate != null) {
+            delegate.RegisterOIAEvent(new haus.nightmare.lib3270j.ecl.ECLOIAListener() {
+                @Override
+                public void OIANotifyEvent(haus.nightmare.lib3270j.ecl.ECLOIAEvent event) {
+                    ECLOIAEvent facadeEvt = new ECLOIAEvent(event);
+                    for (ECLOIANotify n : oiaNotifies) {
+                        try {
+                            n.OIANotifyEvent(facadeEvt);
+                        } catch (Exception ignored) {}
+                    }
+                }
+            });
+        }
+    }
+
+    public void RegisterOIAEvent(ECLOIANotify notify) {
+        if (notify != null && !oiaNotifies.contains(notify)) {
+            oiaNotifies.add(notify);
+        }
+    }
+
+    public void registerOIAEvent(ECLOIANotify notify) { RegisterOIAEvent(notify); }
+
+    public void RegisterOIAEvent(haus.nightmare.lib3270j.ecl.ECLOIAListener listener) {
+        if (delegate != null) {
+            delegate.RegisterOIAEvent(listener);
+        }
+    }
+
+    public void UnregisterOIAEvent(ECLOIANotify notify) {
+        if (notify != null) {
+            oiaNotifies.remove(notify);
+        }
+    }
+
+    public void unregisterOIAEvent(ECLOIANotify notify) { UnregisterOIAEvent(notify); }
+
+    public void UnregisterOIAEvent(haus.nightmare.lib3270j.ecl.ECLOIAListener listener) {
+        if (delegate != null) {
+            delegate.UnregisterOIAEvent(listener);
+        }
+    }
+
+    public boolean IsAlphanumeric() {
+        return delegate != null && delegate.IsAlphanumeric();
+    }
+
+    public boolean isAlphanumeric() { return IsAlphanumeric(); }
+
+    public boolean IsNumeric() {
+        return delegate != null && delegate.IsNumeric();
+    }
+
+    public boolean isNumeric() { return IsNumeric(); }
+
+    public boolean IsDBCS() {
+        return delegate != null && delegate.IsDBCS();
+    }
+
+    public boolean isDBCS() { return IsDBCS(); }
+
+    public boolean IsInsertMode() {
+        return delegate != null && delegate.IsInsertMode();
+    }
+
+    public boolean isInsertMode() { return IsInsertMode(); }
+
+    public boolean IsCommError() {
+        return delegate != null && delegate.IsCommError();
+    }
+
+    public boolean isCommError() { return IsCommError(); }
+
+    public boolean IsKeyLocked() {
+        return delegate != null && delegate.isKeyLocked();
+    }
+
+    public boolean isKeyLocked() { return IsKeyLocked(); }
+
+    public boolean IsMessageWaiting() {
+        return delegate != null && delegate.IsMessageWaiting();
+    }
+
+    public boolean isMessageWaiting() { return IsMessageWaiting(); }
+
+    public int GetInputInhibited() {
+        return delegate != null ? delegate.getInputInhibited() : 0;
+    }
+
+    public int getInputInhibited() { return GetInputInhibited(); }
+
+    public int GetAlphanumericType() {
+        return delegate != null ? delegate.getAlphanumericType() : 0;
+    }
+
+    public int getAlphanumericType() { return GetAlphanumericType(); }
+
+    public boolean WaitForInput(long timeout) {
+        return delegate != null && delegate.WaitForInput(timeout);
+    }
+
+    public boolean WaitForSystemAvailable(long timeout) {
+        return delegate != null && delegate.WaitForSystemAvailable(timeout);
+    }
+
+    public boolean WaitForAppAvailable(long timeout) {
+        return delegate != null && delegate.WaitForAppAvailable(timeout);
+    }
+
+    public boolean WaitForTransition(long timeout) {
+        return delegate != null && delegate.WaitForTransition(timeout);
+    }
+
+    public haus.nightmare.lib3270j.ecl.ECLOIA getDelegate() { return delegate; }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLOIAEvent.java

@@ -0,0 +1,80 @@
+package com.ibm.eNetwork.ECL;
+
+import com.ibm.eNetwork.ECL.event.ECLEvent;
+
+/**
+ * Event object dispatched on Operator Information Area (ECLOIA) status changes matching IBM HoD.
+ */
+public class ECLOIAEvent extends ECLEvent {
+
+    public String data;
+    public long newState;
+    public long changedMask;
+
+    private int inputInhibited = 0;
+    private int alphanumericType = 0;
+    private boolean insertMode = false;
+
+    public ECLOIAEvent(Object source, long newState, long changedMask, String data) {
+        super(source);
+        this.newState = newState;
+        this.changedMask = changedMask;
+        this.data = data != null ? data : "";
+    }
+
+    public ECLOIAEvent(Object source, int eventType, int inputInhibited, int alphanumericType,
+                       boolean insertMode, String statusString) {
+        super(source);
+        this.inputInhibited = inputInhibited;
+        this.alphanumericType = alphanumericType;
+        this.insertMode = insertMode;
+        this.data = statusString != null ? statusString : "";
+        this.newState = inputInhibited;
+        this.changedMask = eventType;
+    }
+
+    public ECLOIAEvent(haus.nightmare.lib3270j.ecl.ECLOIAEvent delegate) {
+        super(delegate != null ? delegate.getSource() : null);
+        if (delegate != null) {
+            this.inputInhibited = delegate.getInputInhibited();
+            this.alphanumericType = delegate.getAlphanumericType();
+            this.insertMode = delegate.isInsertMode();
+            this.data = delegate.getStatusString();
+            this.newState = delegate.getInputInhibited();
+            this.changedMask = delegate.getEventType();
+        }
+    }
+
+    public ECLOIA GetOIA() {
+        Object src = GetSource();
+        if (src instanceof ECLOIA) {
+            return (ECLOIA) src;
+        } else if (src instanceof haus.nightmare.lib3270j.ecl.ECLOIA) {
+            return new ECLOIA((haus.nightmare.lib3270j.ecl.ECLOIA) src);
+        }
+        return null;
+    }
+
+    public ECLOIA getOIA() { return GetOIA(); }
+
+    public int GetInputInhibited() { return inputInhibited; }
+    public int getInputInhibited() { return inputInhibited; }
+
+    public int GetAlphanumericType() { return alphanumericType; }
+    public int getAlphanumericType() { return alphanumericType; }
+
+    public boolean IsInsertMode() { return insertMode; }
+    public boolean isInsertMode() { return insertMode; }
+
+    public boolean IsInputInhibited() { return inputInhibited != 0; }
+    public boolean isInputInhibited() { return IsInputInhibited(); }
+
+    public String GetStatusString() { return data; }
+    public String getStatusString() { return data; }
+
+    @Override
+    public String toString() {
+        return "ECLOIAEvent: changedMask=0x" + Long.toHexString(this.changedMask) +
+               ", newState=0x" + Long.toHexString(this.newState) + ", data=" + this.data;
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLOIANotify.java

@@ -0,0 +1,17 @@
+package com.ibm.eNetwork.ECL;
+
+/**
+ * Operator Information Area notification interface matching IBM Host On-Demand ECLOIANotify.
+ */
+public interface ECLOIANotify {
+    void NotifyEvent(ECLOIA oia, int inhibitReason, int state, String text);
+    default void NotifyStop(ECLOIA oia, int reason) {}
+    default void NotifyError(ECLOIA oia, ECLErr err) {}
+    default void OIANotifyStop(ECLOIA oia, int reason) { NotifyStop(oia, reason); }
+    default void OIANotifyError(ECLOIA oia, ECLErr err) { NotifyError(oia, err); }
+    default void OIANotifyEvent(ECLOIAEvent event) {
+        if (event != null) {
+            NotifyEvent(event.GetOIA(), event.GetInputInhibited(), 0, "");
+        }
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLPS.java

@@ -0,0 +1,514 @@
+package com.ibm.eNetwork.ECL;
+
+import com.ibm.eNetwork.ECL.event.ECLPSListener;
+import java.io.Serializable;
+
+/**
+ * Presentation Space facade matching IBM Host On-Demand ECLPS.
+ * Provides 1-based indexing, method signature parity, and checked ECLErr exception semantics.
+ */
+public class ECLPS implements ECLConstants, Serializable, Cloneable {
+
+    private static final long serialVersionUID = 1L;
+
+    private final haus.nightmare.lib3270j.ecl.ECLPS delegate;
+
+    public ECLPS(haus.nightmare.lib3270j.ecl.ECLPS delegate) {
+        this.delegate = delegate;
+    }
+
+    public ECLPS(haus.nightmare.lib3270j.ecl.ECLSession session) {
+        this(session != null ? session.GetPS() : null);
+    }
+
+    public ECLPS(ECLSession session) {
+        this(session != null ? session.getDelegate() : null);
+    }
+
+    public haus.nightmare.lib3270j.ecl.ECLPS getDelegate() {
+        return delegate;
+    }
+
+    // ========== Dimensions & Position Conversion (1-based) ==========
+
+    public int GetSize() {
+        return delegate != null ? delegate.GetSize() : 0;
+    }
+
+    public int getSize() { return GetSize(); }
+
+    public int GetRows() {
+        return delegate != null ? delegate.GetRows() : 0;
+    }
+
+    public int getRows() { return GetRows(); }
+
+    public int GetCols() {
+        return delegate != null ? delegate.GetCols() : 0;
+    }
+
+    public int getCols() { return GetCols(); }
+
+    public int GetSizeRows() { return GetRows(); }
+    public int GetSizeCols() { return GetCols(); }
+
+    public int ConvertRowColToPos(int row, int col) throws ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.ConvertRowColToPos(row, col);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return 1;
+    }
+
+    public int convertRowColToPos(int row, int col) throws ECLErr {
+        return ConvertRowColToPos(row, col);
+    }
+
+    public int ConvertPosToRow(int pos) throws ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.ConvertPosToRow(pos);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return 1;
+    }
+
+    public int convertPosToRow(int pos) throws ECLErr {
+        return ConvertPosToRow(pos);
+    }
+
+    public int ConvertPosToCol(int pos) throws ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.ConvertPosToCol(pos);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return 1;
+    }
+
+    public int convertPosToCol(int pos) throws ECLErr {
+        return ConvertPosToCol(pos);
+    }
+
+    public void ConvertPosToRowCol(int pos, int[] rowCol) throws ECLErr {
+        if (delegate != null) {
+            try {
+                delegate.ConvertPosToRowCol(pos, rowCol);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+    }
+
+    public void convertPosToRowCol(int pos, int[] rowCol) throws ECLErr {
+        ConvertPosToRowCol(pos, rowCol);
+    }
+
+    public int[] ConvertPosToRowCol(int pos) throws ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.ConvertPosToRowCol(pos);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return new int[]{1, 1};
+    }
+
+    public int[] convertPosToRowCol(int pos) throws ECLErr {
+        return ConvertPosToRowCol(pos);
+    }
+
+    // ========== Cursor Operations (1-based) ==========
+
+    public int GetCursorPos() {
+        return delegate != null ? delegate.GetCursorPos() : 1;
+    }
+
+    public int getCursorPos() { return GetCursorPos(); }
+
+    public int GetCursorRow() {
+        return delegate != null ? delegate.GetCursorRow() : 1;
+    }
+
+    public int getCursorRow() { return GetCursorRow(); }
+
+    public int GetCursorCol() {
+        return delegate != null ? delegate.GetCursorCol() : 1;
+    }
+
+    public int getCursorCol() { return GetCursorCol(); }
+
+    public void SetCursorPos(int pos) throws ECLErr {
+        if (delegate != null) {
+            try {
+                delegate.SetCursorPos(pos);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+    }
+
+    public void setCursorPos(int pos) throws ECLErr {
+        SetCursorPos(pos);
+    }
+
+    public void SetCursorPos(int row, int col) throws ECLErr {
+        if (delegate != null) {
+            try {
+                delegate.SetCursorPos(row, col);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+    }
+
+    public void setCursorPos(int row, int col) throws ECLErr {
+        SetCursorPos(row, col);
+    }
+
+    // ========== GetString & SetString Operations (1-based) ==========
+
+    public int GetString(char[] buffer, int len, int pos) throws ECLErr {
+        return GetString(buffer, len, pos, len);
+    }
+
+    public int GetString(char[] buffer, int len, int pos, int length) throws ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.GetString(buffer, len, pos, length);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return 0;
+    }
+
+    public int GetString(char[] buffer, int len, int row, int col, int length) throws ECLErr {
+        return GetString(buffer, len, ConvertRowColToPos(row, col), length);
+    }
+
+    public String GetString(int pos, int length) throws ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.GetString(pos, length);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return "";
+    }
+
+    public String getString(int pos, int length) throws ECLErr {
+        return GetString(pos, length);
+    }
+
+    public String GetString(int row, int col, int length) throws ECLErr {
+        return GetString(ConvertRowColToPos(row, col), length);
+    }
+
+    public String getString(int row, int col, int length) throws ECLErr {
+        return GetString(row, col, length);
+    }
+
+    public void SetString(String text, int pos) throws ECLErr {
+        if (delegate != null) {
+            try {
+                delegate.SetString(text, pos);
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+    }
+
+    public void setString(String text, int pos) throws ECLErr {
+        SetString(text, pos);
+    }
+
+    public void SetString(String text, int row, int col) throws ECLErr {
+        SetString(text, ConvertRowColToPos(row, col));
+    }
+
+    public void setString(String text, int row, int col) throws ECLErr {
+        SetString(text, row, col);
+    }
+
+    public void SetString(String text) throws ECLErr {
+        SetString(text, GetCursorPos());
+    }
+
+    public void setString(String text) throws ECLErr {
+        SetString(text);
+    }
+
+    public void SetText(String text, int pos) throws ECLErr {
+        SetString(text, pos);
+    }
+
+    public void SetText(String text, int row, int col) throws ECLErr {
+        SetString(text, row, col);
+    }
+
+    public void setText(String text, int pos) {
+        if (delegate != null) delegate.setText(text, pos);
+    }
+
+    public void setText(String text, int row, int col) {
+        if (delegate != null) delegate.setText(text, row, col);
+    }
+
+    // ========== Search Operations (1-based) ==========
+
+    public int SearchText(String text, int dir, int startPos) {
+        return delegate != null ? delegate.SearchText(text, dir, startPos) : 0;
+    }
+
+    public int SearchText(String text, int dir) {
+        return delegate != null ? delegate.SearchText(text, dir) : 0;
+    }
+
+    public int SearchText(String text) {
+        return delegate != null ? delegate.SearchText(text) : 0;
+    }
+
+    public int SearchText(String text, int row, int col, int dir) throws ECLErr {
+        return SearchText(text, dir, ConvertRowColToPos(row, col));
+    }
+
+    public int SearchString(String text, int dir, int startPos) {
+        return SearchText(text, dir, startPos);
+    }
+
+    public int SearchString(String text, int dir) {
+        return SearchText(text, dir);
+    }
+
+    public int SearchString(String text) {
+        return SearchText(text);
+    }
+
+    public int SearchString(String text, int row, int col, int dir) throws ECLErr {
+        return SearchText(text, row, col, dir);
+    }
+
+    public int SearchPS(String text) {
+        return delegate != null ? delegate.SearchPS(text) : 0;
+    }
+
+    public int SearchPS(String text, int startPos) {
+        return delegate != null ? delegate.SearchPS(text, startPos) : 0;
+    }
+
+    public int SearchPSExt(String text, int startPos, int endPos, int dir, boolean ignoreCase, boolean wrap) {
+        return delegate != null ? delegate.SearchPSExt(text, startPos, endPos, dir, ignoreCase, wrap) : 0;
+    }
+
+    // ========== Keystrokes & Mnemonics ==========
+
+    public void SendKeys(String keys) {
+        if (delegate != null) delegate.SendKeys(keys);
+    }
+
+    public void sendKeys(String keys) { SendKeys(keys); }
+
+    public void SendKeys(String keys, int pos) {
+        if (delegate != null) delegate.SendKeys(keys, pos);
+    }
+
+    public void sendKeys(String keys, int pos) { SendKeys(keys, pos); }
+
+    public void SendKeys(String keys, int row, int col) {
+        if (delegate != null) delegate.SendKeys(keys, row, col);
+    }
+
+    public void sendKeys(String keys, int row, int col) { SendKeys(keys, row, col); }
+
+    public void SendCharacters(String keys) {
+        if (delegate != null) delegate.SendCharacters(keys);
+    }
+
+    public void sendCharacters(String keys) { SendCharacters(keys); }
+
+    public void SendCharacters(String keys, int delayMs) {
+        if (delegate != null) delegate.SendCharacters(keys, delayMs);
+    }
+
+    public void sendCharacters(String keys, int delayMs) { SendCharacters(keys, delayMs); }
+
+    public void SendCharacters(String keys, int pos, int delayMs) {
+        if (delegate != null) delegate.SendCharacters(keys, pos, delayMs);
+    }
+
+    public void sendCharacters(String keys, int pos, int delayMs) { SendCharacters(keys, pos, delayMs); }
+
+    public void SendCharacters(String keys, int row, int col, int delayMs) {
+        if (delegate != null) delegate.SendCharacters(keys, row, col, delayMs);
+    }
+
+    public void sendCharacters(String keys, int row, int col, int delayMs) { SendCharacters(keys, row, col, delayMs); }
+
+    public String[] GetSendKeyMnemonics() {
+        return delegate != null ? delegate.GetSendKeyMnemonics() : new String[0];
+    }
+
+    public String[] getSendKeyMnemonics() { return GetSendKeyMnemonics(); }
+
+    // ========== Field Operations ==========
+
+    public ECLFieldList GetFieldList() {
+        haus.nightmare.lib3270j.ecl.ECLFieldList fl = delegate != null ? delegate.GetFieldList() : null;
+        return new ECLFieldList(fl, this);
+    }
+
+    public ECLFieldList getFieldList() { return GetFieldList(); }
+
+    public ECLField GetField(int pos) throws ECLErr {
+        return GetFieldList().FindField(pos);
+    }
+
+    public ECLField getField(int pos) throws ECLErr { return GetField(pos); }
+
+    public ECLField GetField(int row, int col) throws ECLErr {
+        return GetFieldList().FindField(row, col);
+    }
+
+    public ECLField getField(int row, int col) throws ECLErr { return GetField(row, col); }
+
+    public ECLField GetFirstField() {
+        return GetFieldList().GetFirstField();
+    }
+
+    public ECLField getFirstField() { return GetFirstField(); }
+
+    public ECLField GetNextField(ECLField prev) {
+        return GetFieldList().GetNextField(prev);
+    }
+
+    public ECLField getNextField(ECLField prev) { return GetNextField(prev); }
+
+    // ========== Listener Overloads for HoD Interfaces ==========
+
+    public void RegisterPSEvent(ECLPSNotify notify) {
+        if (delegate != null) delegate.RegisterPSEvent(notify);
+    }
+
+    public void registerPSEvent(ECLPSNotify notify) { RegisterPSEvent(notify); }
+
+    public void RegisterPSEvent(ECLPSNotify notify, int eventType) {
+        if (delegate != null) delegate.RegisterPSEvent(notify, eventType);
+    }
+
+    public void registerPSEvent(ECLPSNotify notify, int eventType) { RegisterPSEvent(notify, eventType); }
+
+    public void RegisterPSEvent(ECLPSNotify notify, ECLScreenDesc desc) {
+        if (delegate != null) delegate.RegisterPSEvent(notify, desc);
+    }
+
+    public void registerPSEvent(ECLPSNotify notify, ECLScreenDesc desc) { RegisterPSEvent(notify, desc); }
+
+    public void RegisterPSEvent(ECLPSNotify notify, ECLScreenDesc desc, int eventType) {
+        if (delegate != null) delegate.RegisterPSEvent(notify, desc, eventType);
+    }
+
+    public void registerPSEvent(ECLPSNotify notify, ECLScreenDesc desc, int eventType) { RegisterPSEvent(notify, desc, eventType); }
+
+    public void UnregisterPSEvent(ECLPSNotify notify) {
+        if (delegate != null) delegate.UnregisterPSEvent(notify);
+    }
+
+    public void unregisterPSEvent(ECLPSNotify notify) { UnregisterPSEvent(notify); }
+
+    public void RegisterPSEvent(ECLPSListener listener) {
+        if (delegate != null) delegate.RegisterPSEvent(listener);
+    }
+
+    public void registerPSEvent(ECLPSListener listener) { RegisterPSEvent(listener); }
+
+    public void UnregisterPSEvent(ECLPSListener listener) {
+        if (delegate != null) delegate.UnregisterPSEvent(listener);
+    }
+
+    public void unregisterPSEvent(ECLPSListener listener) { UnregisterPSEvent(listener); }
+
+    // ========== Synchronization & Waits ==========
+
+    public boolean WaitForScreen(ECLScreenDesc desc, long timeoutMs) {
+        return delegate != null && delegate.WaitForScreen(desc, timeoutMs);
+    }
+
+    public boolean waitForScreen(ECLScreenDesc desc, long timeoutMs) { return WaitForScreen(desc, timeoutMs); }
+
+    public boolean WaitForScreen(ECLScreenDesc desc) {
+        return delegate != null && delegate.WaitForScreen(desc);
+    }
+
+    public boolean waitForScreen(ECLScreenDesc desc) { return WaitForScreen(desc); }
+
+    public boolean WaitWhileScreen(ECLScreenDesc desc, long timeoutMs) {
+        return delegate != null && delegate.WaitWhileScreen(desc, timeoutMs);
+    }
+
+    public boolean waitWhileScreen(ECLScreenDesc desc, long timeoutMs) { return WaitWhileScreen(desc, timeoutMs); }
+
+    public boolean WaitWhileScreen(ECLScreenDesc desc) {
+        return delegate != null && delegate.WaitWhileScreen(desc);
+    }
+
+    public boolean waitWhileScreen(ECLScreenDesc desc) { return WaitWhileScreen(desc); }
+
+    public boolean WaitForString(String text, long timeoutMs) {
+        return delegate != null && delegate.WaitForString(text, timeoutMs);
+    }
+
+    public boolean waitForString(String text, long timeoutMs) { return WaitForString(text, timeoutMs); }
+
+    public boolean WaitForString(String text) {
+        return delegate != null && delegate.WaitForString(text);
+    }
+
+    public boolean waitForString(String text) { return WaitForString(text); }
+
+    public boolean WaitForString(String text, int row, int col, long timeoutMs) {
+        return delegate != null && delegate.WaitForString(text, row, col, timeoutMs);
+    }
+
+    public boolean waitForString(String text, int row, int col, long timeoutMs) { return WaitForString(text, row, col, timeoutMs); }
+
+    public boolean WaitForCursor(int row, int col, long timeoutMs) {
+        return delegate != null && delegate.WaitForCursor(row, col, timeoutMs);
+    }
+
+    public boolean waitForCursor(int row, int col, long timeoutMs) { return WaitForCursor(row, col, timeoutMs); }
+
+    // ========== Screen Update Inquiries ==========
+
+    public ECLPSUpdate GetScreen(int startRow, int startCol, int length) throws ECLErr {
+        return GetScreen(startRow, startCol, length, false);
+    }
+
+    public ECLPSUpdate GetScreen(int startRow, int startCol, int length, boolean fillNulls) throws ECLErr {
+        int pos = ConvertRowColToPos(startRow, startCol);
+        char[] buf = new char[length];
+        GetString(buf, length, pos, length);
+        if (fillNulls) {
+            for (int i = 0; i < buf.length; i++) {
+                if (buf[i] == '\0') buf[i] = ' ';
+            }
+        }
+        int endPos = pos + length - 1;
+        int endRow = ConvertPosToRow(endPos);
+        int endCol = ConvertPosToCol(endPos);
+        return new ECLPSUpdate(this, startRow, startCol, endRow, endCol, new String(buf));
+    }
+
+    public int GetScreen(char[] buffer, int len, int row, int col, int length, int plane) {
+        return delegate.GetScreen(buffer, len, row, col, length, plane);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLPSNotify.java

@@ -0,0 +1,10 @@
+package com.ibm.eNetwork.ECL;
+
+/**
+ * Presentation space notification interface matching IBM Host On-Demand ECLPSNotify.
+ */
+public interface ECLPSNotify {
+    void NotifyEvent(ECLPS ps);
+    default void NotifyStop(ECLPS ps, int reason) {}
+    default void NotifyError(ECLPS ps, ECLErr err) {}
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLPSUpdate.java

@@ -0,0 +1,90 @@
+package com.ibm.eNetwork.ECL;
+
+import java.io.Serializable;
+
+/**
+ * Conforms to IBM Host On-Demand ECLPSUpdate.
+ */
+public class ECLPSUpdate implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    private final haus.nightmare.lib3270j.ecl.ECLPSUpdate delegate;
+    private final int startRow;
+    private final int startCol;
+    private final int endRow;
+    private final int endCol;
+    private final int start;
+    private final int end;
+    private final boolean fullUpdate;
+    private final String text;
+    private final transient ECLPS ps;
+
+    public ECLPSUpdate(ECLPS ps, int startRow, int startCol, int endRow, int endCol,
+                       int start, int end, boolean fullUpdate, String text) {
+        this.ps = ps;
+        this.startRow = startRow;
+        this.startCol = startCol;
+        this.endRow = endRow;
+        this.endCol = endCol;
+        this.start = start;
+        this.end = end;
+        this.fullUpdate = fullUpdate;
+        this.text = text != null ? text : "";
+        this.delegate = null;
+    }
+
+    public ECLPSUpdate(ECLPS ps, int startRow, int startCol, int endRow, int endCol, String text) {
+        this(ps, startRow, startCol, endRow, endCol, 0, 0, false, text);
+    }
+
+    public ECLPSUpdate(int startRow, int startCol, int endRow, int endCol, String text) {
+        this(null, startRow, startCol, endRow, endCol, 0, 0, false, text);
+    }
+
+    public ECLPSUpdate(haus.nightmare.lib3270j.ecl.ECLPSUpdate delegate) {
+        this.delegate = delegate;
+        this.ps = (delegate != null && delegate.getPS() != null) ? new ECLPS(delegate.getPS()) : null;
+        this.startRow = delegate != null ? delegate.getStartRow() : 0;
+        this.startCol = delegate != null ? delegate.getStartCol() : 0;
+        this.endRow = delegate != null ? delegate.getEndRow() : 0;
+        this.endCol = delegate != null ? delegate.getEndCol() : 0;
+        this.start = delegate != null ? delegate.getStart() : 0;
+        this.end = delegate != null ? delegate.getEnd() : 0;
+        this.fullUpdate = delegate != null && delegate.isFullUpdate();
+        this.text = delegate != null ? delegate.getText() : "";
+    }
+
+    public ECLPS getPS() { return ps; }
+    public ECLPS GetPS() { return ps; }
+
+    public int getStartRow() { return startRow; }
+    public int GetStartRow() { return startRow + 1; }
+
+    public int getStartCol() { return startCol; }
+    public int GetStartCol() { return startCol + 1; }
+
+    public int getEndRow() { return endRow; }
+    public int GetEndRow() { return endRow + 1; }
+
+    public int getEndCol() { return endCol; }
+    public int GetEndCol() { return endCol + 1; }
+
+    public int getStart() { return start; }
+    public int GetStart() { return start + 1; }
+
+    public int getEnd() { return end; }
+    public int GetEnd() { return end + 1; }
+
+    public boolean isFullUpdate() { return fullUpdate; }
+    public boolean IsFullUpdate() { return fullUpdate; }
+
+    public String getText() { return text; }
+    public String GetText() { return text; }
+
+    @Override
+    public String toString() {
+        return String.format("ECLPSUpdate[start=(%d,%d), end=(%d,%d), full=%b]",
+                startRow, startCol, endRow, endCol, fullUpdate);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLScreenDesc.java

@@ -0,0 +1,21 @@
+package com.ibm.eNetwork.ECL;
+
+import java.io.Serializable;
+
+/**
+ * Screen descriptor matching engine facade matching IBM Host On-Demand ECLScreenDesc.
+ */
+public class ECLScreenDesc extends haus.nightmare.lib3270j.ecl.ECLScreenDesc implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    public ECLScreenDesc() {
+        super();
+    }
+
+    public boolean Matches(ECLPS ps, ECLOIA oia) {
+        haus.nightmare.lib3270j.ecl.ECLPS p = (ps != null) ? ps.getDelegate() : null;
+        haus.nightmare.lib3270j.ecl.ECLOIA o = (oia != null) ? oia.getDelegate() : null;
+        return super.Matches(p, o);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLScreenNotify.java

@@ -0,0 +1,8 @@
+package com.ibm.eNetwork.ECL;
+
+/**
+ * Listener interface for ECLScreenReco matching notifications matching IBM HoD.
+ */
+public interface ECLScreenNotify {
+    void screenMatching(ECLScreenRecoEvent event);
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLScreenReco.java

@@ -0,0 +1,78 @@
+package com.ibm.eNetwork.ECL;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Screen recognition facade matching IBM Host On-Demand ECLScreenReco.
+ */
+public class ECLScreenReco {
+
+    private final haus.nightmare.lib3270j.ecl.ECLScreenReco delegate;
+    private final ECLPS ps;
+    private final Map<ECLScreenDesc, ECLScreenNotify> notifyMap = new ConcurrentHashMap<>();
+
+    public ECLScreenReco() {
+        this((ECLPS) null);
+    }
+
+    public ECLScreenReco(ECLSession session) {
+        this(session != null ? session.GetPS() : null);
+    }
+
+    public ECLScreenReco(ECLPS ps) {
+        this(ps, (ECLOIA) null);
+    }
+
+    public ECLScreenReco(ECLPS ps, ECLOIA oia) {
+        this.ps = ps;
+        this.delegate = new haus.nightmare.lib3270j.ecl.ECLScreenReco(ps != null ? ps.getDelegate() : null,
+                oia != null ? oia.getDelegate() : null);
+    }
+
+    public ECLScreenReco(haus.nightmare.lib3270j.ecl.ECLScreenReco delegate) {
+        this.delegate = delegate;
+        this.ps = null;
+    }
+
+    public void RegisterScreen(ECLScreenDesc desc, ECLScreenNotify notify) {
+        if (desc != null && notify != null) {
+            notifyMap.put(desc, notify);
+            if (delegate != null) {
+                delegate.RegisterScreen(desc, event -> notify.screenMatching(new ECLScreenRecoEvent(this, desc, ps)));
+            }
+        }
+    }
+
+    public void registerScreen(ECLScreenDesc desc, ECLScreenNotify notify) {
+        RegisterScreen(desc, notify);
+    }
+
+    public void UnregisterScreen(ECLScreenDesc desc) {
+        if (desc != null) {
+            notifyMap.remove(desc);
+            if (delegate != null) {
+                delegate.UnregisterScreen(desc);
+            }
+        }
+    }
+
+    public void unregisterScreen(ECLScreenDesc desc) {
+        UnregisterScreen(desc);
+    }
+
+    public boolean IsMatch(ECLScreenDesc desc) {
+        if (delegate != null) {
+            return delegate.IsMatch(desc);
+        }
+        return false;
+    }
+
+    public static boolean IsMatch(ECLPS ps, ECLScreenDesc desc) {
+        if (ps == null) return false;
+        if (desc == null) return true;
+        return desc.Matches(ps, (ECLOIA) null);
+    }
+
+    public haus.nightmare.lib3270j.ecl.ECLScreenReco getDelegate() { return delegate; }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLScreenRecoEvent.java

@@ -0,0 +1,39 @@
+package com.ibm.eNetwork.ECL;
+
+import com.ibm.eNetwork.ECL.event.ECLEvent;
+
+/**
+ * Event delivered when an ECLScreenDesc matches the Presentation Space.
+ */
+public class ECLScreenRecoEvent extends ECLEvent {
+
+    private final ECLScreenReco source;
+    private final ECLScreenDesc screenDesc;
+    private final ECLPS ps;
+
+    public ECLScreenRecoEvent(ECLScreenReco source, ECLScreenDesc screenDesc, ECLPS ps) {
+        super(source);
+        this.source = source;
+        this.screenDesc = screenDesc;
+        this.ps = ps;
+    }
+
+    public ECLScreenRecoEvent(Object source, ECLPS ps) {
+        super(source);
+        this.source = (source instanceof ECLScreenReco) ? (ECLScreenReco) source : null;
+        this.screenDesc = null;
+        this.ps = ps;
+    }
+
+    @Override
+    public Object GetSource() { return source != null ? source : super.GetSource(); }
+
+    public ECLScreenReco GetScreenReco() { return source; }
+    public ECLScreenReco getScreenReco() { return source; }
+
+    public ECLScreenDesc GetScreenDesc() { return screenDesc; }
+    public ECLScreenDesc getScreenDesc() { return screenDesc; }
+
+    public ECLPS GetPS() { return ps; }
+    public ECLPS getPS() { return ps; }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLSession.java

@@ -0,0 +1,190 @@
+package com.ibm.eNetwork.ECL;
+
+import java.io.IOException;
+import java.util.Properties;
+
+/**
+ * Top-level session facade matching IBM Host On-Demand ECLSession.
+ * Extends ECLConnection and provides access to Presentation Space (ECLPS),
+ * Operator Information Area (ECLOIA), File Transfer (ECLXfer), and Screen Recognition (ECLScreenReco).
+ */
+public class ECLSession extends ECLConnection implements ECLConstants {
+
+    public static final String SESSION_NAME                     = "SESSION_NAME";
+    public static final String SESSION_LABEL                    = "SESSION_LABEL";
+    public static final String SESSION_TYPE                     = "SESSION_TYPE";
+    public static final String SESSION_HOST                     = "SESSION_HOST";
+    public static final String SESSION_HOST_PORT                = "SESSION_HOST_PORT";
+    public static final String SESSION_PORT                     = "SESSION_PORT";
+    public static final String SESSION_PS_SIZE                  = "SESSION_PS_SIZE";
+    public static final String SESSION_CODE_PAGE                = "SESSION_CODE_PAGE";
+    public static final String SESSION_SSL                      = "SESSION_SSL";
+    public static final String SESSION_SECURITY_PROTOCOL        = "SESSION_SECURITY_PROTOCOL";
+    public static final String SESSION_TLS_PROTOCOL_VERSION     = "tlsProtocolVersion";
+    public static final String SESSION_LU_NAME                  = "SESSION_LU_NAME";
+    public static final String SESSION_TN3270E                  = "SESSION_TN3270E";
+    public static final String SESSION_AUTO_CONNECT             = "SESSION_AUTO_CONNECT";
+    public static final String SESSION_AUTORECONNECT            = "SESSION_AUTORECONNECT";
+    public static final String SESSION_RECONNECT_RETRIES        = "SESSION_RECONNECT_RETRIES";
+    public static final String SESSION_KEEPALIVE                = "SESSION_KEEPALIVE";
+    public static final String KEY_KEEPALIVE_TYPE               = "keepAliveType";
+    public static final String KEY_KEEPALIVE_TIMEOUT            = "keepAliveTimeout";
+    public static final String SESSION_AUTO_SYS_UNLOCK          = "autoSysUnlock";
+    public static final String ENABLE_PASTE_FROM_EXCEL          = "enablePasteFromExcel";
+    public static final String PASTE_TAB_OPTIONS                = "pasteTabOptions";
+    public static final String PASTE_STOP_AT_PROTECTED_LINE     = "pasteStopAtProtectedLine";
+    public static final String BLOCK_PASTE                      = "blockPaste";
+    public static final String PASTE_FIELD_WRAP                 = "pasteFieldWrap";
+    public static final String PASTE_LINE_WRAP                  = "pasteLineWrap";
+    public static final String PASTE_WORD_BREAK                 = "pasteWordBreak";
+
+    private final haus.nightmare.lib3270j.ecl.ECLSession delegate;
+    private final ECLPS ps;
+    private final ECLOIA oia;
+    private final ECLXfer xfer;
+    private final ECLScreenReco screenReco;
+
+    public ECLSession(Properties properties) throws ECLErr {
+        super(properties);
+        this.delegate = new haus.nightmare.lib3270j.ecl.ECLSession(properties);
+        this.ps = new ECLPS(delegate.getPS());
+        this.oia = new ECLOIA(delegate.getOIA());
+        this.xfer = new ECLXfer(delegate.getXfer());
+        this.screenReco = new ECLScreenReco(this.ps, this.oia);
+    }
+
+    public ECLSession() throws ECLErr {
+        this(new Properties());
+    }
+
+    public ECLSession(String host, int port) throws ECLErr {
+        super(host, port);
+        Properties props = new Properties();
+        if (host != null) props.setProperty(SESSION_HOST, host);
+        props.setProperty(SESSION_PORT, String.valueOf(port));
+        this.delegate = new haus.nightmare.lib3270j.ecl.ECLSession(props);
+        this.ps = new ECLPS(delegate.getPS());
+        this.oia = new ECLOIA(delegate.getOIA());
+        this.xfer = new ECLXfer(delegate.getXfer());
+        this.screenReco = new ECLScreenReco(this.ps, this.oia);
+    }
+
+    public ECLSession(haus.nightmare.lib3270j.ecl.ECLSession delegate) {
+        super(delegate);
+        this.delegate = delegate;
+        this.ps = new ECLPS(delegate != null ? delegate.getPS() : null);
+        this.oia = new ECLOIA(delegate != null ? delegate.getOIA() : null);
+        this.xfer = new ECLXfer(delegate != null ? delegate.getXfer() : null);
+        this.screenReco = new ECLScreenReco(this.ps, this.oia);
+    }
+
+    public ECLPS GetPS() {
+        return ps;
+    }
+
+    public ECLPS getPS() {
+        return ps;
+    }
+
+    public ECLOIA GetOIA() {
+        return oia;
+    }
+
+    public ECLOIA getOIA() {
+        return oia;
+    }
+
+    public ECLXfer GetXfer() {
+        return xfer;
+    }
+
+    public ECLXfer getXfer() {
+        return xfer;
+    }
+
+    public ECLScreenReco GetScreenReco() {
+        return screenReco;
+    }
+
+    public ECLScreenReco getScreenReco() {
+        return screenReco;
+    }
+
+    public ECLConnection GetConnection() {
+        return this;
+    }
+
+    public ECLConnection getConnection() {
+        return this;
+    }
+
+    public haus.nightmare.lib3270j.ecl.ECLSession getDelegate() {
+        return delegate;
+    }
+
+    @Override
+    public void StartCommunication() throws IOException {
+        if (delegate != null) {
+            delegate.StartCommunication();
+        } else {
+            super.StartCommunication();
+        }
+    }
+
+    @Override
+    public void StopCommunication() {
+        if (delegate != null) {
+            delegate.StopCommunication();
+        } else {
+            super.StopCommunication();
+        }
+    }
+
+    public boolean StartCommunicationWithBlocking(long timeout) throws InterruptedException, ECLErr {
+        return StartCommunicationWithBlocking(timeout, (ECLScreenDesc) null);
+    }
+
+    public boolean startCommunicationWithBlocking(long timeout) throws InterruptedException, ECLErr {
+        return StartCommunicationWithBlocking(timeout);
+    }
+
+    public boolean StartCommunicationWithBlocking(long timeout, ECLScreenDesc desc) throws InterruptedException, ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.StartCommunicationWithBlocking(timeout, desc);
+            } catch (IOException e) {
+                throw new ECLErr("ECLSession.StartCommunicationWithBlocking", "ECL0001", e.getMessage());
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return false;
+    }
+
+    public boolean startCommunicationWithBlocking(long timeout, ECLScreenDesc desc) throws InterruptedException, ECLErr {
+        return StartCommunicationWithBlocking(timeout, desc);
+    }
+
+    public boolean RestartCommunicationWithBlocking(long timeout) throws InterruptedException, ECLErr {
+        if (delegate != null) {
+            try {
+                return delegate.RestartCommunicationWithBlocking(timeout);
+            } catch (IOException e) {
+                throw new ECLErr("ECLSession.RestartCommunicationWithBlocking", "ECL0001", e.getMessage());
+            } catch (haus.nightmare.lib3270j.ecl.ECLErr e) {
+                throw new ECLErr(e.getMessage());
+            }
+        }
+        return false;
+    }
+
+    public boolean restartCommunicationWithBlocking(long timeout) throws InterruptedException, ECLErr {
+        return RestartCommunicationWithBlocking(timeout);
+    }
+
+    public void dispose() {
+        if (delegate != null) {
+            delegate.dispose();
+        }
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/ECLXfer.java

@@ -0,0 +1,54 @@
+package com.ibm.eNetwork.ECL;
+
+import com.ibm.eNetwork.ECL.event.ECLXferListener;
+
+/**
+ * File transfer facade matching IBM Host On-Demand ECLXfer.
+ */
+public class ECLXfer {
+
+    private final haus.nightmare.lib3270j.ecl.ECLXfer delegate;
+
+    public ECLXfer(ECLSession session, Boolean bidi) {
+        this.delegate = (session != null && session.getDelegate() != null)
+                ? session.getDelegate().GetXfer() : null;
+    }
+
+    public ECLXfer(haus.nightmare.lib3270j.ecl.ECLXfer delegate) {
+        this.delegate = delegate;
+    }
+
+    public void SendFile(String localFile, String hostFile, String options) throws ECLErr {
+        if (delegate != null) {
+            int rc = delegate.SendFile(localFile, hostFile, options);
+            if (rc != 0) {
+                throw new ECLErr("ECLXfer:SendFile", "ECL0150", String.valueOf(rc));
+            }
+        }
+    }
+
+    public void ReceiveFile(String localFile, String hostFile, String options) throws ECLErr {
+        if (delegate != null) {
+            int rc = delegate.ReceiveFile(localFile, hostFile, options);
+            if (rc != 0) {
+                throw new ECLErr("ECLXfer:ReceiveFile", "ECL0150", String.valueOf(rc));
+            }
+        }
+    }
+
+    public void Cancel() {
+        if (delegate != null) {
+            delegate.Cancel();
+        }
+    }
+
+    public void RegisterXferEvent(ECLXferListener listener) {
+        // Can bridge listener if needed
+    }
+
+    public void UnregisterXferEvent(ECLXferListener listener) {
+        // Can bridge listener if needed
+    }
+
+    public haus.nightmare.lib3270j.ecl.ECLXfer getDelegate() { return delegate; }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/event/ECLEvent.java

@@ -0,0 +1,25 @@
+package com.ibm.eNetwork.ECL.event;
+
+/**
+ * Base event class matching IBM Host On-Demand ECLEvent.
+ */
+public class ECLEvent {
+    private final Object originator;
+
+    public ECLEvent(Object object) {
+        this.originator = object;
+    }
+
+    public Object GetSource() {
+        return this.originator;
+    }
+
+    public Object getSource() {
+        return this.originator;
+    }
+
+    @Override
+    public String toString() {
+        return super.toString() + ":  " + (this.originator != null ? this.originator.toString() : "null");
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/event/ECLPSEvent.java

@@ -0,0 +1,126 @@
+package com.ibm.eNetwork.ECL.event;
+
+import com.ibm.eNetwork.ECL.ECLPS;
+import com.ibm.eNetwork.ECL.ECLPSUpdate;
+
+/**
+ * Presentation Space event class matching IBM Host On-Demand ECLPSEvent.
+ */
+public class ECLPSEvent extends ECLEvent {
+
+    public static final int USER_EVENTS = 1;
+    public static final int HOST_EVENTS = 2;
+    public static final int ALL_EVENTS  = 3;
+
+    private int type = 0;
+    private int start = 1;
+    private int end = 1;
+    private int startRow = 1;
+    private int startCol = 1;
+    private int endRow = 1;
+    private int endCol = 1;
+    private int oldCursorPos = 1;
+    private int newCursorPos = 1;
+    private boolean fullUpdate = true;
+    private boolean cursorVisible = true;
+    private int ringCounter = 0;
+    private ECLPSUpdate psUpdate = null;
+    private haus.nightmare.lib3270j.ecl.ECLPSEvent delegate = null;
+
+    public ECLPSEvent(Object source) {
+        super(source);
+        if (source instanceof ECLPS) {
+            ECLPS ps = (ECLPS) source;
+            this.end = ps.GetSize();
+            this.endRow = ps.GetRows();
+            this.endCol = ps.GetCols();
+            this.newCursorPos = ps.GetCursorPos();
+        } else if (source instanceof haus.nightmare.lib3270j.ecl.ECLPS) {
+            haus.nightmare.lib3270j.ecl.ECLPS ps = (haus.nightmare.lib3270j.ecl.ECLPS) source;
+            this.end = ps.GetSize();
+            this.endRow = ps.GetRows();
+            this.endCol = ps.GetCols();
+            this.newCursorPos = ps.GetCursorPos();
+        }
+    }
+
+    public ECLPSEvent(Object source, int type) {
+        this(source);
+        this.type = type;
+    }
+
+    public ECLPSEvent(haus.nightmare.lib3270j.ecl.ECLPSEvent delegate) {
+        super(delegate != null ? delegate.getSource() : null);
+        this.delegate = delegate;
+        if (delegate != null) {
+            this.type = delegate.getType();
+            this.start = delegate.getStart();
+            this.end = delegate.getEnd();
+            this.startRow = delegate.getStartRow();
+            this.startCol = delegate.getStartCol();
+            this.endRow = delegate.getEndRow();
+            this.endCol = delegate.getEndCol();
+            this.oldCursorPos = delegate.getOldCursorAddress() + 1;
+            this.newCursorPos = delegate.getNewCursorAddress() + 1;
+            this.fullUpdate = delegate.isFullUpdate();
+            this.cursorVisible = delegate.isCursorVisible();
+            this.ringCounter = delegate.getRingCounter();
+            if (delegate.getPSUpdate() != null) {
+                this.psUpdate = new ECLPSUpdate(delegate.getPSUpdate());
+            }
+        }
+    }
+
+    public int GetType() { return type; }
+    public int getType() { return type; }
+
+    public ECLPS GetPS() {
+        Object src = GetSource();
+        if (src instanceof ECLPS) {
+            return (ECLPS) src;
+        } else if (src instanceof haus.nightmare.lib3270j.ecl.ECLPS) {
+            return new ECLPS((haus.nightmare.lib3270j.ecl.ECLPS) src);
+        }
+        return null;
+    }
+
+    public void SetStart(int start) { this.start = start; }
+    public int GetStart() { return start; }
+    public int getStart() { return start; }
+
+    public int GetStartRow() { return startRow; }
+    public int getStartRow() { return startRow; }
+
+    public int GetStartCol() { return startCol; }
+    public int getStartCol() { return startCol; }
+
+    public void SetEnd(int end) { this.end = end; }
+    public int GetEnd() { return end; }
+    public int getEnd() { return end; }
+
+    public int GetEndRow() { return endRow; }
+    public int getEndRow() { return endRow; }
+
+    public int GetEndCol() { return endCol; }
+    public int getEndCol() { return endCol; }
+
+    public int GetOldCursorPos() { return oldCursorPos; }
+    public int getOldCursorPos() { return oldCursorPos; }
+
+    public int GetNewCursorPos() { return newCursorPos; }
+    public int getNewCursorPos() { return newCursorPos; }
+
+    public boolean IsFullUpdate() { return fullUpdate; }
+    public boolean isFullUpdate() { return fullUpdate; }
+
+    public boolean IsCursorVisible() { return cursorVisible; }
+    public boolean isCursorVisible() { return cursorVisible; }
+
+    public int GetRingCounter() { return ringCounter; }
+    public int getRingCounter() { return ringCounter; }
+
+    public ECLPSUpdate GetPSUpdate() { return psUpdate; }
+    public ECLPSUpdate getPSUpdate() { return psUpdate; }
+
+    public haus.nightmare.lib3270j.ecl.ECLPSEvent getDelegate() { return delegate; }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/event/ECLPSListener.java

@@ -0,0 +1,13 @@
+package com.ibm.eNetwork.ECL.event;
+
+import com.ibm.eNetwork.ECL.ECLErr;
+import com.ibm.eNetwork.ECL.ECLPS;
+
+/**
+ * Presentation Space listener interface matching IBM Host On-Demand ECLPSListener.
+ */
+public interface ECLPSListener {
+    void PSNotifyEvent(ECLPSEvent event);
+    default void PSNotifyStop(ECLPS ps, int reason) {}
+    default void PSNotifyError(ECLPS ps, ECLErr err) {}
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/event/ECLXferEvent.java

@@ -0,0 +1,48 @@
+package com.ibm.eNetwork.ECL.event;
+
+import com.ibm.eNetwork.ECL.ECLXfer;
+
+/**
+ * File transfer event matching IBM Host On-Demand ECLXferEvent.
+ */
+public class ECLXferEvent extends ECLEvent {
+
+    private final String sourceFile;
+    private final String targetFile;
+    private final boolean receive;
+    private final long unitsDone;
+    private final long unitsToDo;
+
+    public ECLXferEvent(Object source, long unitsDone, String sourceFile, String targetFile, boolean receive) {
+        this(source, unitsDone, -1L, sourceFile, targetFile, receive);
+    }
+
+    public ECLXferEvent(Object source, long unitsDone, long unitsToDo, String sourceFile, String targetFile, boolean receive) {
+        super(source);
+        this.unitsDone = unitsDone;
+        this.unitsToDo = unitsToDo;
+        this.sourceFile = sourceFile;
+        this.targetFile = targetFile;
+        this.receive = receive;
+    }
+
+    public ECLXfer GetECLXfer() {
+        Object src = GetSource();
+        return (src instanceof ECLXfer) ? (ECLXfer) src : null;
+    }
+
+    public String GetSourceFile() { return sourceFile; }
+    public String getSourceFile() { return sourceFile; }
+
+    public String GetTargetFile() { return targetFile; }
+    public String getTargetFile() { return targetFile; }
+
+    public long GetBytesSent() { return unitsDone; }
+    public long getBytesSent() { return unitsDone; }
+
+    public long GetBytesToSend() { return unitsToDo; }
+    public long getBytesToSend() { return unitsToDo; }
+
+    public boolean IsReceive() { return receive; }
+    public boolean isReceive() { return receive; }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/event/ECLXferListener.java

@@ -0,0 +1,13 @@
+package com.ibm.eNetwork.ECL.event;
+
+import com.ibm.eNetwork.ECL.ECLErr;
+import com.ibm.eNetwork.ECL.ECLXfer;
+
+/**
+ * File transfer listener interface matching IBM Host On-Demand ECLXferListener.
+ */
+public interface ECLXferListener {
+    void XferNotifyEvent(ECLXferEvent event);
+    default void XferNotifyStop(ECLXfer xfer, int reason) {}
+    default void XferNotifyError(ECLXfer xfer, ECLErr err) {}
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/macrovariable/MacroExpressionParser.java

@@ -0,0 +1,14 @@
+package com.ibm.eNetwork.ECL.macrovariable;
+
+import java.io.Serializable;
+
+/**
+ * Compatibility facade for IBM Host On-Demand MacroExpressionParser.
+ */
+public class MacroExpressionParser extends haus.nightmare.lib3270j.macro.variable.MacroExpressionParser implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public MacroExpressionParser() {
+        super();
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/macrovariable/MacroVariables.java

@@ -0,0 +1,14 @@
+package com.ibm.eNetwork.ECL.macrovariable;
+
+import java.io.Serializable;
+
+/**
+ * Compatibility facade for IBM Host On-Demand MacroVariables.
+ */
+public class MacroVariables extends haus.nightmare.lib3270j.macro.variable.MacroVariables implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public MacroVariables() {
+        super();
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDAttrib.java

@@ -0,0 +1,20 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDAttrib drop-in facade.
+ */
+public class ECLSDAttrib extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDAttrib {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDAttrib() {
+        super();
+    }
+
+    public ECLSDAttrib(char attrib, int row, int col, int plane) {
+        super(attrib, row, col, plane);
+    }
+
+    public ECLSDAttrib(char attrib, int row, int col, int plane, boolean optional) {
+        super(attrib, row, col, plane, optional);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDBlock.java

@@ -0,0 +1,24 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDBlock drop-in facade.
+ */
+public class ECLSDBlock extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDBlock {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDBlock() {
+        super();
+    }
+
+    public ECLSDBlock(int srow, int scol, boolean caseSense, boolean optional) {
+        super(srow, scol, caseSense, optional);
+    }
+
+    public ECLSDBlock(int srow, int scol, int erow, int ecol, boolean caseSense, boolean optional) {
+        super(srow, scol, erow, ecol, caseSense, optional);
+    }
+
+    public ECLSDBlock(String[] textLines, int srow, int scol, boolean caseSense) {
+        super(textLines, srow, scol, caseSense);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDBlockString.java

@@ -0,0 +1,16 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDBlockString drop-in facade.
+ */
+public class ECLSDBlockString extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDBlockString {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDBlockString() {
+        super();
+    }
+
+    public ECLSDBlockString(String text) {
+        super(text);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDChecksum.java

@@ -0,0 +1,20 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDChecksum drop-in facade.
+ */
+public class ECLSDChecksum extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDChecksum {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDChecksum() {
+        super();
+    }
+
+    public ECLSDChecksum(int value) {
+        super(value);
+    }
+
+    public ECLSDChecksum(int value, boolean optional) {
+        super(value, optional);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDCursor.java

@@ -0,0 +1,20 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDCursor drop-in facade.
+ */
+public class ECLSDCursor extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDCursor {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDCursor() {
+        super();
+    }
+
+    public ECLSDCursor(int row, int col) {
+        super(row, col);
+    }
+
+    public ECLSDCursor(int row, int col, boolean optional) {
+        super(row, col, optional);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDFields.java

@@ -0,0 +1,20 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDFields drop-in facade.
+ */
+public class ECLSDFields extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDFields {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDFields() {
+        super();
+    }
+
+    public ECLSDFields(int num) {
+        super(num);
+    }
+
+    public ECLSDFields(int num, boolean optional) {
+        super(num, optional);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDInputFields.java

@@ -0,0 +1,20 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDInputFields drop-in facade.
+ */
+public class ECLSDInputFields extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDInputFields {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDInputFields() {
+        super();
+    }
+
+    public ECLSDInputFields(int num) {
+        super(num);
+    }
+
+    public ECLSDInputFields(int num, boolean optional) {
+        super(num, optional);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDOIA.java

@@ -0,0 +1,24 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDOIA drop-in facade.
+ */
+public class ECLSDOIA extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDOIA {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDOIA() {
+        super();
+    }
+
+    public ECLSDOIA(int type) {
+        super(type);
+    }
+
+    public ECLSDOIA(int type, boolean optional) {
+        super(type, optional);
+    }
+
+    public ECLSDOIA(String status, boolean optional) {
+        super(status, optional);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLSDString.java

@@ -0,0 +1,36 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLSDString drop-in facade.
+ */
+public class ECLSDString extends haus.nightmare.lib3270j.ecl.screenreco.ECLSDString {
+    private static final long serialVersionUID = 1L;
+
+    public ECLSDString() {
+        super();
+    }
+
+    public ECLSDString(String text) {
+        super(text);
+    }
+
+    public ECLSDString(String text, int row, int col) {
+        super(text, row, col);
+    }
+
+    public ECLSDString(String text, int row, int col, boolean caseSense) {
+        super(text, row, col, caseSense);
+    }
+
+    public ECLSDString(String text, int row, int col, boolean caseSense, boolean optional) {
+        super(text, row, col, caseSense, optional);
+    }
+
+    public ECLSDString(String text, int srow, int scol, int erow, int ecol, boolean caseSense, boolean optional) {
+        super(text, srow, scol, erow, ecol, caseSense, optional);
+    }
+
+    public ECLSDString(String text, int srow, int scol, int erow, int ecol, boolean caseSense, boolean optional, boolean wrap) {
+        super(text, srow, scol, erow, ecol, caseSense, optional, wrap);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/ECL/screenreco/ECLScreenDescriptor.java

@@ -0,0 +1,16 @@
+package com.ibm.eNetwork.ECL.screenreco;
+
+/**
+ * IBM Host On-Demand ECLScreenDescriptor drop-in facade.
+ */
+public abstract class ECLScreenDescriptor extends haus.nightmare.lib3270j.ecl.screenreco.ECLScreenDescriptor {
+    private static final long serialVersionUID = 1L;
+
+    protected ECLScreenDescriptor() {
+        super();
+    }
+
+    protected ECLScreenDescriptor(boolean optional) {
+        super(optional);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/beans/HOD/Macro.java

@@ -0,0 +1,23 @@
+package com.ibm.eNetwork.beans.HOD;
+
+import java.io.Serializable;
+import com.ibm.eNetwork.ECL.ECLSession;
+
+/**
+ * Compatibility facade for IBM Host On-Demand Macro bean.
+ */
+public class Macro extends haus.nightmare.lib3270j.macro.Macro implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public Macro() {
+        super();
+    }
+
+    public Macro(ECLSession session) {
+        super(session != null ? session.getDelegate() : null);
+    }
+
+    public Macro(haus.nightmare.lib3270j.ecl.ECLSession session) {
+        super(session);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/beans/HOD/MacroAction.java

@@ -0,0 +1,10 @@
+package com.ibm.eNetwork.beans.HOD;
+
+import java.io.Serializable;
+
+/**
+ * Compatibility facade for IBM Host On-Demand MacroAction.
+ */
+public abstract class MacroAction extends haus.nightmare.lib3270j.macro.action.MacroAction implements Serializable {
+    private static final long serialVersionUID = 1L;
+}

lib3270j/src/main/java/com/ibm/eNetwork/beans/HOD/MacroActions.java

@@ -0,0 +1,14 @@
+package com.ibm.eNetwork.beans.HOD;
+
+import java.io.Serializable;
+
+/**
+ * Compatibility facade for IBM Host On-Demand MacroActions.
+ */
+public class MacroActions extends haus.nightmare.lib3270j.macro.MacroActions implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public MacroActions() {
+        super();
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/beans/HOD/MacroNextScreens.java

@@ -0,0 +1,14 @@
+package com.ibm.eNetwork.beans.HOD;
+
+import java.io.Serializable;
+
+/**
+ * Compatibility facade for IBM Host On-Demand MacroNextScreens.
+ */
+public class MacroNextScreens extends haus.nightmare.lib3270j.macro.MacroNextScreens implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public MacroNextScreens() {
+        super();
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/beans/HOD/MacroScreen.java

@@ -0,0 +1,18 @@
+package com.ibm.eNetwork.beans.HOD;
+
+import java.io.Serializable;
+
+/**
+ * Compatibility facade for IBM Host On-Demand MacroScreen.
+ */
+public class MacroScreen extends haus.nightmare.lib3270j.macro.MacroScreen implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public MacroScreen() {
+        super();
+    }
+
+    public MacroScreen(String name) {
+        super(name);
+    }
+}

lib3270j/src/main/java/com/ibm/eNetwork/beans/HOD/MacroScreens.java

@@ -0,0 +1,14 @@
+package com.ibm.eNetwork.beans.HOD;
+
+import java.io.Serializable;
+
+/**
+ * Compatibility facade for IBM Host On-Demand MacroScreens.
+ */
+public class MacroScreens extends haus.nightmare.lib3270j.macro.MacroScreens implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public MacroScreens() {
+        super();
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ConnectionConfig.java

@@ -435,6 +435,14 @@ public class ConnectionConfig {
             }
         }
 
+        // Parse [lu@]host[:port] (e.g. "00C2@mvs.host.com:1023")
+        String parsedLu = null;
+        int atIdx = s.indexOf('@');
+        if (atIdx > 0 && atIdx < s.length() - 1) {
+            parsedLu = s.substring(0, atIdx).trim();
+            s = s.substring(atIdx + 1).trim();
+        }
+
         String host = s;
         int port = (defaultPort > 0) ? defaultPort : (tls ? 992 : 23);
 
@@ -458,6 +466,9 @@ public class ConnectionConfig {
         }
 
         ConnectionConfig config = new ConnectionConfig(host, port, defaultModel != null ? defaultModel : TerminalModel.IBM_3279_4);
+        if (parsedLu != null && !parsedLu.isEmpty()) {
+            config.setLuName(parsedLu);
+        }
         config.setUseTls(tls);
         config.setTn3270eEnabled(tn3270e);
         config.setKeepAliveEnabled(keepAlive);

lib3270j/src/main/java/haus/nightmare/lib3270j/Telnet3270Client.java

@@ -92,6 +92,9 @@ public class Telnet3270Client {
                 ps.notifyAlarm();
             }
             @Override public void onKeyboardUnlocked() {
+                if (screenBuffer != null) {
+                    screenBuffer.getHistoryBuffer().snapshot(screenBuffer);
+                }
                 ps.notifyKeyUnlocked();
             }
         });
@@ -658,6 +661,9 @@ public class Telnet3270Client {
     public void setWordWrap(boolean b) { if (screenBuffer != null) screenBuffer.setEntryAssistWordWrap(b); if (oia != null) oia.notifyOIAChanged(); }
     public void toggleWordWrap() { setWordWrap(!isWordWrap()); }
 
+    public boolean isPasteWordBreak() { return inputProcessor != null && inputProcessor.isPasteWordBreak(); }
+    public void setPasteWordBreak(boolean b) { if (inputProcessor != null) inputProcessor.setPasteWordBreak(b); }
+
     /** APL Keyboard Mode operations. */
     public boolean isAplMode() { return inputProcessor != null && inputProcessor.isAplKeyboardMode(); }
     public void setAplMode(boolean b) { if (inputProcessor != null) inputProcessor.setAplKeyboardMode(b); }
@@ -705,4 +711,8 @@ public class Telnet3270Client {
     public haus.nightmare.lib3270j.graphics.GocaDecoder getGocaDecoder() {
         return dsProcessor.getGocaDecoder();
     }
+
+    public haus.nightmare.lib3270j.screen.ScreenHistoryBuffer getScreenHistoryBuffer() {
+        return screenBuffer != null ? screenBuffer.getHistoryBuffer() : null;
+    }
 }

lib3270j/src/main/java/haus/nightmare/lib3270j/charset/EbcdicTranslator.java

@@ -4,10 +4,10 @@ import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
- * EBCDIC ↔ Unicode character translator conforming to IBM Host On-Demand (HoD v14).
+ * EBCDIC ↔ Unicode character translator conforming to Host On-Demand (HoD v14).
  * Modular architecture delegating to pluggable CodePage implementations (SBCS and DBCS).
  * Supports custom per-instance character translation override tables and complete
- * IBM 3270 APL / Graphic Escape (GA23-0059) character mappings.
+ * 3270 APL / Graphic Escape (GA23-0059) character mappings.
  * Default: Code Page 037 (US/Canada EBCDIC).
  */
 public class EbcdicTranslator {
@@ -210,10 +210,12 @@ public class EbcdicTranslator {
      */
     public char ebcdicToUnicode(int ebc) {
         int b = ebc & 0xFF;
+        if (!customEbcdicToUnicode.isEmpty()) {
             Character custom = customEbcdicToUnicode.get(b);
             if (custom != null) {
                 return custom;
             }
+        }
         return activeCodePage.ebcdicToUnicode(b);
     }
 
@@ -236,10 +238,12 @@ public class EbcdicTranslator {
      * Returns -1 if the character cannot be mapped.
      */
     public int unicodeToEbcdic(char unicode) {
+        if (!customUnicodeToEbcdic.isEmpty()) {
             Integer custom = customUnicodeToEbcdic.get(unicode);
             if (custom != null) {
                 return custom;
             }
+        }
         return activeCodePage.unicodeToEbcdic(unicode);
     }
 
@@ -296,8 +300,8 @@ public class EbcdicTranslator {
     }
 
     /**
-     * Map an IBM 3270 APL / Graphic Escape (GE) EBCDIC code point to its Unicode glyph.
+     * Map a 3270 APL / Graphic Escape (GE) EBCDIC code point to its Unicode glyph.
-     * Conforms to IBM 3270 APL / Text character set and GA23-0059 specification.
+     * Conforms to 3270 APL / Text character set and GA23-0059 specification.
      */
     public char mapAPL(int ebcdicCodePoint) {
         switch (ebcdicCodePoint & 0xFF) {
@@ -331,7 +335,7 @@ public class EbcdicTranslator {
             case 0xBF: return '\u00B5'; // Micro 'µ'
             case 0x5F: return '\u00AC'; // Not sign '¬'
 
-            // IBM 3270 APL Operational & Structural Glyphs
+            // 3270 APL Operational & Structural Glyphs
             case 0x80: return '\u22C4'; // Diamond '⋄'
             case 0x81: return '\u237A'; // APL Alpha '⍺'
             case 0x82: return '\u22A5'; // Up Tack / Decode '⊥'
@@ -383,7 +387,7 @@ public class EbcdicTranslator {
     }
 
     /**
-     * Translate an IBM 3270 Graphic Escape (GE) / APL character code to Unicode.
+     * Translate a 3270 Graphic Escape (GE) / APL character code to Unicode.
      */
     public char getAplGraphic(int ec) {
         return mapAPL(ec);

lib3270j/src/main/java/haus/nightmare/lib3270j/datastream/DataStreamProcessor.java

@@ -54,6 +54,13 @@ public class DataStreamProcessor {
     private boolean unlockSysPending = false;
     private boolean rcvdRead = false;
 
+    // Modal SA (set attribute) character attributes
+    private byte currentFg = 0;
+    private byte currentBg = 0;
+    private byte currentGr = 0;
+    private byte currentCs = 0;
+    private byte currentOl = 0;
+
     /** Functional interface for sending output back through the telnet stack. */
     @FunctionalInterface
     public interface OutputSender {
@@ -240,6 +247,11 @@ public class DataStreamProcessor {
                     programSymbolManager.commitStagedSymbols();
                     log.info(">>> EAU: erasing all unprotected fields");
                     screen.eraseAllUnprotected();
+                    currentFg = 0;
+                    currentBg = 0;
+                    currentGr = 0;
+                    currentCs = 0;
+                    currentOl = 0;
                     break;
                 case CMD_WSF:
                 case SNA_CMD_WSF:
@@ -378,11 +390,21 @@ public class DataStreamProcessor {
         if (wccReset(wcc)) {
             // Reset all character attributes to defaults
             log.fine("WCC reset: clearing default attributes");
+            currentFg = 0;
+            currentBg = 0;
+            currentGr = 0;
+            currentCs = 0;
+            currentOl = 0;
         }
 
         if (eraseFirst) {
             screen.clear();
             log.fine("Cleared screen for Erase/Write");
+            currentFg = 0;
+            currentBg = 0;
+            currentGr = 0;
+            currentCs = 0;
+            currentOl = 0;
         }
 
         // Process orders and data starting at byte 2
@@ -390,9 +412,6 @@ public class DataStreamProcessor {
         int end = offset + length;
         int baddr = screen.getBufferAddress();
         int size = screen.getRows() * screen.getCols();
-
-        // Current SA (set attribute) values for character-mode
-        byte currentFg = 0, currentBg = 0, currentGr = 0, currentCs = 0;
         boolean lastWasOrder = false;
 
         while (pos < end) {
@@ -427,10 +446,6 @@ public class DataStreamProcessor {
                     // FA position is a display position that shows as blank
                     ea.ec = 0;
                     ea.ucs4 = ' ';
-                    currentFg = 0;
-                    currentBg = 0;
-                    currentGr = 0;
-                    currentCs = 0;
                     screen.setFormatted(true);
                     baddr = (baddr + 1) % size;
                     screen.setBufferAddress(baddr);
@@ -455,10 +470,6 @@ public class DataStreamProcessor {
                     ea.clear();
                     ea.ec = 0;
                     ea.ucs4 = ' ';
-                    currentFg = 0;
-                    currentBg = 0;
-                    currentGr = 0;
-                    currentCs = 0;
 
                     for (int i = 0; i < nPairs; i++) {
                         int attrType = data[pos + 2 + i * 2] & 0xFF;
@@ -485,6 +496,13 @@ public class DataStreamProcessor {
                     int attrType = data[pos + 1] & 0xFF;
                     int attrValue = data[pos + 2] & 0xFF;
                     switch (attrType) {
+                        case XA_ALL:
+                            currentFg = 0;
+                            currentBg = 0;
+                            currentGr = 0;
+                            currentCs = 0;
+                            currentOl = 0;
+                            break;
                         case XA_FOREGROUND:
                             currentFg = (byte) attrValue;
                             break;
@@ -508,6 +526,10 @@ public class DataStreamProcessor {
                         case XA_CHARSET:
                             currentCs = (byte) attrValue;
                             break;
+                        case XA_OUTLINING:
+                        case 0x84:
+                            currentOl = (byte) attrValue;
+                            break;
                     }
                     pos += 3;
                     lastWasOrder = true;
@@ -535,6 +557,8 @@ public class DataStreamProcessor {
                             applyExtendedAttribute(ea, attrType, attrValue);
                         }
                     }
+                    baddr = (baddr + 1) % size;
+                    screen.setBufferAddress(baddr);
                     pos += 2 + nPairs * 2;
                     lastWasOrder = true;
                     break;
@@ -590,6 +614,7 @@ public class DataStreamProcessor {
                         ea.bg = currentBg;
                         ea.gr = (byte) currentGr;
                         ea.cs = fillCs;
+                        ea.ol = currentOl;
                         baddr = (baddr + 1) % size;
                     } while (baddr != toAddr);
                     screen.setBufferAddress(baddr);
@@ -618,6 +643,7 @@ public class DataStreamProcessor {
                                 ea.bg = 0;
                                 ea.gr = 0;
                                 ea.cs = 0;
+                                ea.ol = 0;
                             }
                         }
                         baddr = (baddr + 1) % size;
@@ -642,6 +668,7 @@ public class DataStreamProcessor {
                     ea.fg = currentFg;
                     ea.bg = currentBg;
                     ea.gr = (byte) currentGr;
+                    ea.ol = currentOl;
                     baddr = (baddr + 1) % size;
                     screen.setBufferAddress(baddr);
                     pos += 2;
@@ -668,6 +695,7 @@ public class DataStreamProcessor {
                     ea.bg = currentBg;
                     ea.gr = (byte) currentGr;
                     ea.cs = currentCs;
+                    ea.ol = currentOl;
 
                     baddr = (baddr + 1) % size;
                     screen.setBufferAddress(baddr);
@@ -980,11 +1008,18 @@ public class DataStreamProcessor {
                         byte[] psData = new byte[fieldLen - 3];
                         System.arraycopy(data, pos + 3, psData, 0, psData.length);
                         programSymbolManager.loadps(psData);
+                        notifyScreenUpdated();
                     }
                     break;
                 case haus.nightmare.lib3270j.graphics.GocaConstants.SF_OBJDATA: // 0x85: Graphics Object Data / GOCA
                     if (fieldLen > 3) {
+                        graphicsPlane.setCharDimensions(qrBuilder.getCharWidth(), qrBuilder.getCharHeight());
                         graphicsPlane.setScreenDimensions(screen.getCols(), screen.getRows());
+                        int targetW = screen.getCols() * qrBuilder.getCharWidth();
+                        int targetH = screen.getRows() * qrBuilder.getCharHeight();
+                        if (graphicsPlane.getCanvasWidth() != targetW || graphicsPlane.getCanvasHeight() != targetH) {
+                            graphicsPlane.resize(targetW, targetH);
+                        }
                         gocaDecoder.decodeStream(data, pos + 3, fieldLen - 3);
                         notifyScreenUpdated();
                     }
@@ -1284,6 +1319,7 @@ public class DataStreamProcessor {
                         byte[] psData = new byte[fieldLen - 4];
                         System.arraycopy(data, offset + 4, psData, 0, psData.length);
                         programSymbolManager.loadps(psData);
+                        notifyScreenUpdated();
                     }
                     break;
                 case haus.nightmare.lib3270j.graphics.GocaConstants.SF_OBJDATA_SUB: { // 0x0F: Object Control / Data Unit
@@ -1298,9 +1334,10 @@ public class DataStreamProcessor {
                     int orderOffset = (fieldLen >= 7) ? (offset + 7) : (offset + 4);
                     int orderLen = Math.max(0, fieldLen - (orderOffset - offset));
 
+                    graphicsPlane.setCharDimensions(qrBuilder.getCharWidth(), qrBuilder.getCharHeight());
                     graphicsPlane.setScreenDimensions(screen.getCols(), screen.getRows());
-                    int targetW = screen.getCols() * 9;
+                    int targetW = screen.getCols() * qrBuilder.getCharWidth();
-                    int targetH = screen.getRows() * 16;
+                    int targetH = screen.getRows() * qrBuilder.getCharHeight();
                     if (graphicsPlane.getCanvasWidth() != targetW || graphicsPlane.getCanvasHeight() != targetH) {
                         graphicsPlane.resize(targetW, targetH);
                     }

lib3270j/src/main/java/haus/nightmare/lib3270j/datastream/FastByteBuffer.java

@@ -0,0 +1,86 @@
+package haus.nightmare.lib3270j.datastream;
+
+import java.io.OutputStream;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+
+/**
+ * Reusable, resizable byte buffer that provides zero-copy access to its internal
+ * array and supports ByteBuffer slicing to minimize heap allocations during
+ * network stream processing.
+ */
+public class FastByteBuffer extends OutputStream {
+
+    private byte[] buf;
+    private int count;
+
+    public FastByteBuffer() {
+        this(32768);
+    }
+
+    public FastByteBuffer(int initialCapacity) {
+        this.buf = new byte[Math.max(32, initialCapacity)];
+        this.count = 0;
+    }
+
+    private void ensureCapacity(int minCapacity) {
+        if (minCapacity > buf.length) {
+            int newCap = Math.max(buf.length << 1, minCapacity);
+            buf = Arrays.copyOf(buf, newCap);
+        }
+    }
+
+    @Override
+    public synchronized void write(int b) {
+        ensureCapacity(count + 1);
+        buf[count++] = (byte) b;
+    }
+
+    @Override
+    public synchronized void write(byte[] b, int off, int len) {
+        if (b == null || len <= 0) return;
+        ensureCapacity(count + len);
+        System.arraycopy(b, off, buf, count, len);
+        count += len;
+    }
+
+    /**
+     * Direct reference to internal buffer array.
+     * Use {@link #size()} to determine active length.
+     */
+    public synchronized byte[] buffer() {
+        return buf;
+    }
+
+    public synchronized int size() {
+        return count;
+    }
+
+    public synchronized void reset() {
+        count = 0;
+    }
+
+    /**
+     * Creates a read-only ByteBuffer view wrapping active bytes without copying.
+     */
+    public synchronized ByteBuffer asByteBuffer() {
+        return ByteBuffer.wrap(buf, 0, count).asReadOnlyBuffer();
+    }
+
+    /**
+     * Creates a read-only ByteBuffer slice for a sub-range without copying.
+     */
+    public synchronized ByteBuffer slice(int offset, int length) {
+        if (offset < 0 || length < 0 || offset + length > count) {
+            throw new IndexOutOfBoundsException("offset=" + offset + " length=" + length + " size=" + count);
+        }
+        return ByteBuffer.wrap(buf, offset, length).slice().asReadOnlyBuffer();
+    }
+
+    /**
+     * Produces a copied byte array if an isolated copy is explicitly required.
+     */
+    public synchronized byte[] toByteArray() {
+        return Arrays.copyOf(buf, count);
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/datastream/QueryReplyBuilder.java

@@ -9,7 +9,7 @@ import static haus.nightmare.lib3270j.protocol.DS3270Constants.*;
 
 /**
  * Builds Query Reply structured fields in response to host Read Partition queries.
- * Matches IBM 3270 Architecture (GA23-0059) and x3270 sf.c exact binary layout.
+ * Matches 3270 Architecture (GA23-0059) and x3270 sf.c exact binary layout.
  */
 public class QueryReplyBuilder {
 
@@ -18,10 +18,102 @@ public class QueryReplyBuilder {
     private static final int SW_3279_2 = 0x09;
     private static final int SH_3279_2 = 0x0c;
 
-    // Usable Area physical dimensions matching IBM Host On-Demand DS3270.java (Inches, 96 dpi: 0x00010060)
+    // Usable Area physical dimensions matching HOD DS3270.java (Inches, 96 dpi: 0x00010060)
     private static final int Xr_HOD = 0x00010060;
     private static final int Yr_HOD = 0x00010060;
 
+    // Pre-computed static query reply payloads to eliminate allocation churn
+    private static final byte[] STATIC_QR_COLOR = new byte[] {
+        0x00, 0x08, 0x00, (byte) 0xF4,
+        (byte) 0xF1, (byte) 0xF1, // Blue
+        (byte) 0xF2, (byte) 0xF2, // Red
+        (byte) 0xF3, (byte) 0xF3, // Pink
+        (byte) 0xF4, (byte) 0xF4, // Green
+        (byte) 0xF5, (byte) 0xF5, // Turquoise
+        (byte) 0xF6, (byte) 0xF6, // Yellow
+        (byte) 0xF7, (byte) 0xF7  // Neutral/White
+    };
+
+    private static final byte[] STATIC_QR_HIGHLIGHTING = new byte[] {
+        0x04, 0x00, (byte) 0xF0,
+        (byte) 0xF1, (byte) 0xF1,
+        (byte) 0xF2, (byte) 0xF2,
+        (byte) 0xF4, (byte) 0xF4
+    };
+
+    private static final byte[] STATIC_QR_REPLY_MODES = new byte[] {
+        SF_SRM_FIELD, SF_SRM_XFIELD, SF_SRM_CHAR
+    };
+
+    private static final byte[] STATIC_QR_OUTLINING = new byte[] {
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+    };
+
+    private static final byte[] STATIC_QR_DBCS_ASIA = new byte[] {
+        0x00, 0x03, 0x01, (byte) 0x80, 0x03, 0x02, 0x01
+    };
+
+    private static final byte[] STATIC_QR_AUXDA = new byte[] {
+        0x00, 0x00
+    };
+
+    private static final byte[] STATIC_QR_TRANSPARENCY = new byte[] {
+        0x02, 0x00, (byte) 0xF0, (byte) 0xFF, (byte) 0xFF
+    };
+
+    private static final byte[] STATIC_QR_SEGMENT = new byte[] {
+        (byte) 0x80, 0x02, 0x00, 0x00, 0x00, (byte) 0xFC, 0x00
+    };
+
+    private static final byte[] STATIC_QR_PROCEDURE = new byte[] {
+        0x00, 0x01, 0x00, 0x00, 0x00, (byte) 0xFC, 0x00,
+        0x06, 0x40, 0x06, 0x40, 0x06, 0x01,
+        (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xF0
+    };
+
+    private static final byte[] STATIC_QR_LINETYPE = new byte[] {
+        0x00, 0x09, 0x00, 0x07,
+        0x01, 0x01, 0x02, 0x02, 0x03, 0x03, 0x04, 0x04,
+        0x05, 0x05, 0x06, 0x06, 0x07, 0x07, 0x08, 0x08
+    };
+
+    private static final byte[] STATIC_PORT_BLOCKS;
+    static {
+        ByteArrayOutputStream pOut = new ByteArrayOutputStream(64);
+        byte[][] data = {
+            { 0x00, 0x03, 0x02, (byte) 0x90, 0x09, 0x01, 0x00, 0x03, 0x02, (byte) 0x80, 0x00, 0x7F, (byte) 0xFF },
+            { 0x00, 0x04, 0x08, 0x40, 0x07, 0x03, 0x00, 0x03, (byte) 0x80, 0x00, 0x02 },
+            { 0x00, 0x05, 0x02, (byte) 0x80, 0x09, 0x01, 0x00, 0x01, 0x02, (byte) 0x80, 0x00, 0x7F, (byte) 0xFF },
+            { 0x00, 0x07, 0x08, 0x40, 0x07, 0x03, 0x00, 0x01, 0x00, 0x00, 0x1C }
+        };
+        for (byte[] d : data) {
+            int len = 4 + d.length;
+            pOut.write((len >> 8) & 0xFF);
+            pOut.write(len & 0xFF);
+            pOut.write(SFID_QREPLY);
+            pOut.write(QR_PORT);
+            pOut.write(d, 0, d.length);
+        }
+        STATIC_PORT_BLOCKS = pOut.toByteArray();
+    }
+
+    private static final byte[] STATIC_QR_GRCOLOR;
+    static {
+        ByteArrayOutputStream gOut = new ByteArrayOutputStream(110);
+        gOut.write(0x00); gOut.write(0x04); gOut.write(0x00); gOut.write(0xFF); gOut.write(0xFF);
+        gOut.write(0x00); gOut.write(0x10); gOut.write(0x00); gOut.write(0x10);
+        for (int i = 0; i < 16; i++) {
+            gOut.write(0x00);
+            gOut.write(i);
+            int argb = haus.nightmare.lib3270j.graphics.GocaConstants.GOCA_COLORS[i];
+            gOut.write((argb >> 16) & 0xFF);
+            gOut.write((argb >> 8) & 0xFF);
+            gOut.write(argb & 0xFF);
+            gOut.write(0x00);
+        }
+        STATIC_QR_GRCOLOR = gOut.toByteArray();
+    }
+
     private final ScreenBuffer screen;
     private GraphicsMode graphicsMode = GraphicsMode.BOTH;
 
@@ -101,27 +193,27 @@ public class QueryReplyBuilder {
         appendQueryReply(out, QR_CHARSETS, buildCharsets());
 
         // Color (0x86)
-        appendQueryReply(out, QR_COLOR, buildColor());
+        appendQueryReply(out, QR_COLOR, STATIC_QR_COLOR);
 
         // Highlighting (0x87)
-        appendQueryReply(out, QR_HIGHLIGHTING, buildHighlighting());
+        appendQueryReply(out, QR_HIGHLIGHTING, STATIC_QR_HIGHLIGHTING);
 
         // Reply Modes (0x88)
-        appendQueryReply(out, QR_REPLY_MODES, buildReplyModes());
+        appendQueryReply(out, QR_REPLY_MODES, STATIC_QR_REPLY_MODES);
 
         boolean isDbcs = (screen != null && screen.getTranslator() != null && screen.getTranslator().isDBCS());
         if (isDbcs) {
             // Outlining (0x8C)
-            appendQueryReply(out, QR_OUTLINING, buildOutlining());
+            appendQueryReply(out, QR_OUTLINING, STATIC_QR_OUTLINING);
             // DBCS Asia (0x91)
-            appendQueryReply(out, QR_DBCS_ASIA, buildDbcsAsia());
+            appendQueryReply(out, QR_DBCS_ASIA, STATIC_QR_DBCS_ASIA);
         }
 
         // Distributed Data Management (0x95)
         appendQueryReply(out, QR_DDM, buildDdm(4096));
 
         // Auxiliary Devices (0x99)
-        appendQueryReply(out, QR_AUXDA, buildAuxDa());
+        appendQueryReply(out, QR_AUXDA, STATIC_QR_AUXDA);
 
         // Implicit Partition (0xA6)
         appendQueryReply(out, QR_IMP_PART, buildImplicitPartition(maxCols, maxRows));
@@ -141,26 +233,26 @@ public class QueryReplyBuilder {
         appendQueryReply(out, QR_USABLE_AREA, buildUsableArea(maxCols, maxRows, bufferSize));
         appendQueryReply(out, QR_ALPHA_PART, buildAlphaPartitions(maxRows));
         appendQueryReply(out, QR_CHARSETS, buildCharsets());
-        appendQueryReply(out, QR_COLOR, buildColor());
+        appendQueryReply(out, QR_COLOR, STATIC_QR_COLOR);
-        appendQueryReply(out, QR_HIGHLIGHTING, buildHighlighting());
+        appendQueryReply(out, QR_HIGHLIGHTING, STATIC_QR_HIGHLIGHTING);
-        appendQueryReply(out, QR_REPLY_MODES, buildReplyModes());
+        appendQueryReply(out, QR_REPLY_MODES, STATIC_QR_REPLY_MODES);
 
-        appendQueryReply(out, QR_OUTLINING, buildOutlining());
+        appendQueryReply(out, QR_OUTLINING, STATIC_QR_OUTLINING);
         boolean isDbcs = (screen != null && screen.getTranslator() != null && screen.getTranslator().isDBCS());
         if (isDbcs) {
-            appendQueryReply(out, QR_DBCS_ASIA, buildDbcsAsia());
+            appendQueryReply(out, QR_DBCS_ASIA, STATIC_QR_DBCS_ASIA);
         }
         appendQueryReply(out, QR_DDM, buildDdm(4096));
-        appendQueryReply(out, QR_AUXDA, buildAuxDa());
+        appendQueryReply(out, QR_AUXDA, STATIC_QR_AUXDA);
         appendQueryReply(out, QR_IMP_PART, buildImplicitPartition(maxCols, maxRows));
 
         if (graphicsMode.isVectorGraphicsEnabled()) {
-            appendQueryReply(out, QR_TRANSPARENCY, buildTransparency()); // 0xA8
+            appendQueryReply(out, QR_TRANSPARENCY, STATIC_QR_TRANSPARENCY); // 0xA8
-            appendQueryReply(out, QR_SEGMENT, buildSegment(maxCols, maxRows));       // 0xB0
+            appendQueryReply(out, QR_SEGMENT, STATIC_QR_SEGMENT);           // 0xB0
-            appendQueryReply(out, QR_PROCEDURE, buildProcedure(maxCols, maxRows));   // 0xB1
+            appendQueryReply(out, QR_PROCEDURE, STATIC_QR_PROCEDURE);       // 0xB1
-            appendQueryReply(out, QR_LINETYPE, buildLineType());                     // 0xB2
+            appendQueryReply(out, QR_LINETYPE, STATIC_QR_LINETYPE);         // 0xB2
             appendPort(out);                                                // 0xB3
-            appendQueryReply(out, QR_GRCOLOR, buildGrColor());                       // 0xB4
+            appendQueryReply(out, QR_GRCOLOR, STATIC_QR_GRCOLOR);           // 0xB4
             appendQueryReply(out, QR_GRSYMBOLSET, buildGrSymbolSet());      // 0xB6
         }
 
@@ -197,20 +289,20 @@ public class QueryReplyBuilder {
                     appendQueryReply(out, QR_CHARSETS, buildCharsets());
                     break;
                 case QR_COLOR:
-                    appendQueryReply(out, QR_COLOR, buildColor());
+                    appendQueryReply(out, QR_COLOR, STATIC_QR_COLOR);
                     break;
                 case QR_HIGHLIGHTING:
-                    appendQueryReply(out, QR_HIGHLIGHTING, buildHighlighting());
+                    appendQueryReply(out, QR_HIGHLIGHTING, STATIC_QR_HIGHLIGHTING);
                     break;
                 case QR_REPLY_MODES:
-                    appendQueryReply(out, QR_REPLY_MODES, buildReplyModes());
+                    appendQueryReply(out, QR_REPLY_MODES, STATIC_QR_REPLY_MODES);
                     break;
                 case QR_OUTLINING: // 0x8C
-                    appendQueryReply(out, QR_OUTLINING, buildOutlining());
+                    appendQueryReply(out, QR_OUTLINING, STATIC_QR_OUTLINING);
                     break;
                 case QR_DBCS_ASIA: // 0x91
                     if (screen != null && screen.getTranslator() != null && screen.getTranslator().isDBCS()) {
-                        appendQueryReply(out, QR_DBCS_ASIA, buildDbcsAsia());
+                        appendQueryReply(out, QR_DBCS_ASIA, STATIC_QR_DBCS_ASIA);
                     } else {
                         appendQueryReply(out, QR_NULL, new byte[0]);
                     }
@@ -219,35 +311,35 @@ public class QueryReplyBuilder {
                     appendQueryReply(out, QR_DDM, buildDdm(4096));
                     break;
                 case QR_AUXDA: // 0x99
-                    appendQueryReply(out, QR_AUXDA, buildAuxDa());
+                    appendQueryReply(out, QR_AUXDA, STATIC_QR_AUXDA);
                     break;
                 case QR_IMP_PART: // 0xA6
                     appendQueryReply(out, QR_IMP_PART, buildImplicitPartition(maxCols, maxRows));
                     break;
                 case QR_TRANSPARENCY: // 0xA8
                     if (graphicsMode.isVectorGraphicsEnabled()) {
-                        appendQueryReply(out, QR_TRANSPARENCY, buildTransparency());
+                        appendQueryReply(out, QR_TRANSPARENCY, STATIC_QR_TRANSPARENCY);
                     } else {
                         appendQueryReply(out, QR_NULL, new byte[0]);
                     }
                     break;
                 case QR_SEGMENT: // 0xB0
                     if (graphicsMode.isVectorGraphicsEnabled()) {
-                        appendQueryReply(out, QR_SEGMENT, buildSegment(maxCols, maxRows));
+                        appendQueryReply(out, QR_SEGMENT, STATIC_QR_SEGMENT);
                     } else {
                         appendQueryReply(out, QR_NULL, new byte[0]);
                     }
                     break;
                 case QR_PROCEDURE: // 0xB1
                     if (graphicsMode.isVectorGraphicsEnabled()) {
-                        appendQueryReply(out, QR_PROCEDURE, buildProcedure(maxCols, maxRows));
+                        appendQueryReply(out, QR_PROCEDURE, STATIC_QR_PROCEDURE);
                     } else {
                         appendQueryReply(out, QR_NULL, new byte[0]);
                     }
                     break;
                 case QR_LINETYPE: // 0xB2
                     if (graphicsMode.isVectorGraphicsEnabled()) {
-                        appendQueryReply(out, QR_LINETYPE, buildLineType());
+                        appendQueryReply(out, QR_LINETYPE, STATIC_QR_LINETYPE);
                     } else {
                         appendQueryReply(out, QR_NULL, new byte[0]);
                     }
@@ -261,7 +353,7 @@ public class QueryReplyBuilder {
                     break;
                 case QR_GRCOLOR: // 0xB4
                     if (graphicsMode.isVectorGraphicsEnabled()) {
-                        appendQueryReply(out, QR_GRCOLOR, buildGrColor());
+                        appendQueryReply(out, QR_GRCOLOR, STATIC_QR_GRCOLOR);
                     } else {
                         appendQueryReply(out, QR_NULL, new byte[0]);
                     }
@@ -321,19 +413,19 @@ public class QueryReplyBuilder {
         out.write(maxCols & 0xFF);           // usable width low
         out.write((maxRows >> 8) & 0xFF);    // usable height high
         out.write(maxRows & 0xFF);           // usable height low
-        out.write(0x00);                     // units (0x00 = inches, matching IBM Host On-Demand QR_USEAREA_STRING)
+        out.write(0x00);                     // units (0x00 = inches, matching HOD QR_USEAREA_STRING)
-        // Xr (4 bytes) - matching IBM Host On-Demand QR_USEAREA_STRING (96 DPI)
+        // Xr (4 bytes) - matching HOD QR_USEAREA_STRING (96 DPI)
         out.write((Xr_HOD >> 24) & 0xFF);
         out.write((Xr_HOD >> 16) & 0xFF);
         out.write((Xr_HOD >> 8) & 0xFF);
         out.write(Xr_HOD & 0xFF);
-        // Yr (4 bytes) - matching IBM Host On-Demand QR_USEAREA_STRING (96 DPI)
+        // Yr (4 bytes) - matching HOD QR_USEAREA_STRING (96 DPI)
         out.write((Yr_HOD >> 24) & 0xFF);
         out.write((Yr_HOD >> 16) & 0xFF);
         out.write((Yr_HOD >> 8) & 0xFF);
         out.write(Yr_HOD & 0xFF);
-        int charW = getCharWidth();
+        int charW = getCharWidth(maxRows);
-        int charH = getCharHeight();
+        int charH = getCharHeight(maxRows);
         out.write(charW);                    // AW
         out.write(charH);                    // AH
         int buf = maxCols * maxRows;
@@ -343,6 +435,11 @@ public class QueryReplyBuilder {
     }
 
     public int getCharWidth() {
+        int rows = (screen != null) ? screen.getMaxRows() : MODEL_2_ROWS;
+        return getCharWidth(rows);
+    }
+
+    public int getCharWidth(int rows) {
         if (screen != null && screen.getTranslator() != null && screen.getTranslator().isDBCS()) {
             return 12;
         }
@@ -350,18 +447,11 @@ public class QueryReplyBuilder {
     }
 
     public int getCharHeight() {
-        // ARCHITECTURAL NOTE ON 3179G GOCA VERTICAL ALIGNMENT & QUERY REPLIES:
+        int rows = (screen != null) ? screen.getMaxRows() : MODEL_2_ROWS;
-        // Why hardcoding SH = 12 (0x0C) in Character Sets & Usable Area failed in past iterations:
+        return getCharHeight(rows);
-        // When SDH/AH is declared as 12 (0x0C) in Query Reply, the mainframe host GDDM engine computes
+    }
-        // total presentation space as rows * 12 (e.g. 43 * 12 = 516 units, yMax = 257).
+
-        // GDDM then places the top menu bar at Row 1 (gy = 187..200).
+    public int getCharHeight(int rows) {
-        // Meanwhile, the client emulator rendered into a 16-pitch grid (43 * 16 = 688 units, yMax = 343).
-        // On a 688-unit canvas, gy = 200 mapped to Row 9.2 (middle of the screen), leaving a massive void above.
-        // When the user clicked on the visual menu drawn at Row 9, the client emitted gy = 189 with cursor at Row 9,
-        // which GDDM rejected as outside its menu hit box (causing terminal alarm beeps).
-        //
-        // Solution: Declare SDH = 16 (0x10) when Vector Graphics is enabled (3179G standard), ensuring host GDDM
-        // and client GraphicsPlane share the exact same 16-pitch presentation space (720x688, yMax = 343).
         return graphicsMode.isVectorGraphicsEnabled() ? 0x10 : SH_3279_2;
     }
 
@@ -392,8 +482,8 @@ public class QueryReplyBuilder {
             cpgid = screen.getTranslator().getCpgid();
         }
 
-        if (graphicsMode == GraphicsMode.PROGRAMMED_SYMBOLS) {
+        if (graphicsMode.isProgrammedSymbolsEnabled()) {
-            // Programmed Symbols only mode (3279 PS with LoadPS 0x0A, flags1 = 0xA2 for GE + PS + CGCSGID)
+            // Programmed Symbols mode (3279 PS / 3179G with LoadPS 0x0A, flags1 = 0xA2 for GE + PS + CGCSGID)
             ByteArrayOutputStream out = new ByteArrayOutputStream(65);
             out.write(0xa2); // flags: GE (0x80), PS/Loadable Charsets (0x20), CGCSGID present (0x02)
             out.write(0x00); // more flags
@@ -442,31 +532,15 @@ public class QueryReplyBuilder {
     }
 
     public byte[] buildColor() {
-        // Alphanumeric Color (matches HOD: 8 pairs, F1..F7 + default F4 green, 18 bytes payload / 22 bytes total)
+        return STATIC_QR_COLOR.clone();
-        return new byte[] {
-            0x00, 0x08, 0x00, (byte) 0xF4,
-            (byte) 0xF1, (byte) 0xF1, // Blue
-            (byte) 0xF2, (byte) 0xF2, // Red
-            (byte) 0xF3, (byte) 0xF3, // Pink
-            (byte) 0xF4, (byte) 0xF4, // Green
-            (byte) 0xF5, (byte) 0xF5, // Turquoise
-            (byte) 0xF6, (byte) 0xF6, // Yellow
-            (byte) 0xF7, (byte) 0xF7  // Neutral/White
-        };
     }
 
     public byte[] buildHighlighting() {
-        // Highlighting (matches HOD: 4 pairs: default F0, Blink F1, Reverse F2, Underscore F4, 9 bytes payload / 13 bytes total)
+        return STATIC_QR_HIGHLIGHTING.clone();
-        return new byte[] {
-            0x04, 0x00, (byte) 0xF0,
-            (byte) 0xF1, (byte) 0xF1,
-            (byte) 0xF2, (byte) 0xF2,
-            (byte) 0xF4, (byte) 0xF4
-        };
     }
 
     public byte[] buildReplyModes() {
-        return new byte[] { SF_SRM_FIELD, SF_SRM_XFIELD, SF_SRM_CHAR };
+        return STATIC_QR_REPLY_MODES.clone();
     }
 
     public byte[] buildDdm() {
@@ -517,39 +591,27 @@ public class QueryReplyBuilder {
     }
 
     public byte[] buildOutlining() {
-        // HOD QueryReply3270Constants.java QR_OUTLINING_STRING ("\u0000\n\u0081\u008c\u0000\u0000\u0000\u0000\u0000\u0000")
+        return STATIC_QR_OUTLINING.clone();
-        return new byte[]{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
     }
 
     public byte[] buildDbcsAsia() {
-        // HOD QueryReply3270Constants.java QR_DBCS_ASIA_STRING ("\u0000\u000b\u0081\u0091\u0000\u0003\u0001\u0080\u0003\u0002\u0001")
+        return STATIC_QR_DBCS_ASIA.clone();
-        return new byte[]{ 0x00, 0x03, 0x01, (byte) 0x80, 0x03, 0x02, 0x01 };
     }
 
     public byte[] buildAuxDa() {
-        // HOD QueryReply3270Constants.java QR_AUXDA_STRING ("\u0000\u0006\u0081\u0099\u0000\u0000")
+        return STATIC_QR_AUXDA.clone();
-        return new byte[]{ 0x00, 0x00 };
     }
 
     public byte[] buildTransparency() {
-        // HOD QueryReply3270Constants.java QR_TRANSPARENCY_STRING ("\u0000\t\u0081\u00a8\u0002\u0000\u00f0\u00ff\u00ff")
+        return STATIC_QR_TRANSPARENCY.clone();
-        return new byte[]{ 0x02, 0x00, (byte) 0xF0, (byte) 0xFF, (byte) 0xFF };
     }
 
     public byte[] buildSegment() {
-        int maxCols = (screen != null) ? screen.getMaxCols() : MODEL_2_COLS;
+        return STATIC_QR_SEGMENT.clone();
-        int maxRows = (screen != null) ? screen.getMaxRows() : MODEL_2_ROWS;
-        return buildSegment(maxCols, maxRows);
     }
 
     public byte[] buildSegment(int maxCols, int maxRows) {
-        // HOD QueryReply3270Constants.java QR_SEGMENT_STRING ("\u0000\u000b\u0081\u00b0\u0080\u0002\u0000\u0000\u0000\u00fc\u0000")
+        return STATIC_QR_SEGMENT.clone();
-        return new byte[]{
-            (byte) 0x80, 0x02,
-            0x00, 0x00,
-            0x00, (byte) 0xFC,
-            0x00
-        };
     }
 
     public byte[] buildGraphics() {
@@ -561,21 +623,11 @@ public class QueryReplyBuilder {
     }
 
     public byte[] buildProcedure() {
-        int maxCols = (screen != null) ? screen.getMaxCols() : MODEL_2_COLS;
+        return STATIC_QR_PROCEDURE.clone();
-        int maxRows = (screen != null) ? screen.getMaxRows() : MODEL_2_ROWS;
-        return buildProcedure(maxCols, maxRows);
     }
 
     public byte[] buildProcedure(int maxCols, int maxRows) {
-        // HOD QueryReply3270Constants.java QR_PROCEDURE_STRING ("\u0000\u0015\u0081\u00b1\u0000\u0001\u0000\u0000\u0000\u00fc\u0000\u0006@\u0006@\u0006\u0001\u00ff\u00ff\u00ff\u00f0")
+        return STATIC_QR_PROCEDURE.clone();
-        return new byte[]{
-            0x00, 0x01,
-            0x00, 0x00,
-            0x00, (byte) 0xFC,
-            0x00,
-            0x06, 0x40, 0x06, 0x40, 0x06, 0x01,
-            (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xF0
-        };
     }
 
     public byte[] buildGImage() {
@@ -587,12 +639,7 @@ public class QueryReplyBuilder {
     }
 
     public byte[] buildLineType() {
-        // HOD QueryReply3270Constants.java QR_LINETYPE_STRING ("\u0000\u0018\u0081\u00b2\u0000\t\u0000\u0007\u0001\u0001\u0002\u0002\u0003\u0003\u0004\u0004\u0005\u0005\u0006\u0006\u0007\u0007\b\b")
+        return STATIC_QR_LINETYPE.clone();
-        return new byte[]{
-            0x00, 0x09, 0x00, 0x07,
-            0x01, 0x01, 0x02, 0x02, 0x03, 0x03, 0x04, 0x04,
-            0x05, 0x05, 0x06, 0x06, 0x07, 0x07, 0x08, 0x08
-        };
     }
 
     public byte[] buildAuxDev() {
@@ -604,19 +651,7 @@ public class QueryReplyBuilder {
     }
 
     public void appendPort(ByteArrayOutputStream out) {
-        // HOD QueryReply3270Constants.java QR_PORT_STRING (4 OEM format sub-fields, 64 bytes total)
+        out.write(STATIC_PORT_BLOCKS, 0, STATIC_PORT_BLOCKS.length);
-        appendQueryReply(out, QR_PORT, new byte[]{
-            0x00, 0x03, 0x02, (byte) 0x90, 0x09, 0x01, 0x00, 0x03, 0x02, (byte) 0x80, 0x00, 0x7F, (byte) 0xFF
-        });
-        appendQueryReply(out, QR_PORT, new byte[]{
-            0x00, 0x04, 0x08, 0x40, 0x07, 0x03, 0x00, 0x03, (byte) 0x80, 0x00, 0x02
-        });
-        appendQueryReply(out, QR_PORT, new byte[]{
-            0x00, 0x05, 0x02, (byte) 0x80, 0x09, 0x01, 0x00, 0x01, 0x02, (byte) 0x80, 0x00, 0x7F, (byte) 0xFF
-        });
-        appendQueryReply(out, QR_PORT, new byte[]{
-            0x00, 0x07, 0x08, 0x40, 0x07, 0x03, 0x00, 0x01, 0x00, 0x00, 0x1C
-        });
     }
 
     public void appendOemFmt(ByteArrayOutputStream out) {
@@ -624,9 +659,7 @@ public class QueryReplyBuilder {
     }
 
     public byte[] buildPort() {
-        ByteArrayOutputStream out = new ByteArrayOutputStream(70);
+        return STATIC_PORT_BLOCKS.clone();
-        appendPort(out);
-        return out.toByteArray();
     }
 
     public byte[] buildOemFormat() {
@@ -634,24 +667,7 @@ public class QueryReplyBuilder {
     }
 
     public byte[] buildGrColor() {
-        // HOD QueryReply3270Constants.java QR_GRCOLOR_STRING (109 bytes total)
+        return STATIC_QR_GRCOLOR.clone();
-        ByteArrayOutputStream out = new ByteArrayOutputStream(110);
-        out.write(0x00); out.write(0x04); out.write(0x00); out.write(0xFF); out.write(0xFF);
-        out.write(0x00); out.write(0x10); out.write(0x00); out.write(0x10);
-
-        for (int i = 0; i < 16; i++) {
-            out.write(0x00);
-            out.write(i);
-            int argb = haus.nightmare.lib3270j.graphics.GocaConstants.GOCA_COLORS[i];
-            int r = (argb >> 16) & 0xFF;
-            int g = (argb >> 8) & 0xFF;
-            int b = argb & 0xFF;
-            out.write(r);
-            out.write(g);
-            out.write(b);
-            out.write(0x00); // 6th byte in HOD color table
-        }
-        return out.toByteArray();
     }
 
     public byte[] buildGraphicColor() {
@@ -665,16 +681,18 @@ public class QueryReplyBuilder {
     public byte[] buildGrSymbolSet() {
         int charW = getCharWidth();
         int charH = getCharHeight();
-        int cgcsgid = 0x02B9;
+        if (screen != null && screen.getTranslator() != null && screen.getTranslator().isDBCS()) {
-        int cpgid = 0x0025;
+            return new byte[]{
-        if (screen != null && screen.getTranslator() != null) {
+                0x00, 0x00, (byte) charW, (byte) charH, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x12,
-            cgcsgid = screen.getTranslator().getCgcsgid();
+                0x01, 0x00, 0x00, (byte) 0xF0, (byte) 0xC1, (byte) 0xC1, 0x00, 0x00, (byte) charW, (byte) charH,
-            cpgid = screen.getTranslator().getCpgid();
+                0x00, 0x01, 0x4C, 0x01, 0x22, 0x00, 0x00, 0x12, 0x01, 0x00, 0x20, (byte) 0xF8, (byte) 0xC1, (byte) 0xC1,
+                0x00, 0x00, 0x18, 0x18, 0x00, 0x01, 0x72, 0x01, 0x2C, 0x00, (byte) 0xFF
+            };
         }
         return new byte[]{
             0x00, 0x00, (byte) charW, (byte) charH, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x12,
-            0x01, 0x00, 0x00, (byte) 0xF0, (byte) ((cgcsgid >> 8) & 0xFF), (byte) (cgcsgid & 0xFF), 0x00, 0x00,
+            0x01, 0x00, 0x00, (byte) 0xF0, (byte) 0xC1, (byte) 0xC1, 0x00, 0x00,
-            (byte) charW, (byte) charH, 0x00, 0x00, (byte) 0xF0, (byte) ((cgcsgid >> 8) & 0xFF), (byte) (cgcsgid & 0xFF), 0x00, 0x00
+            (byte) charW, (byte) charH, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
         };
     }
 

lib3270j/src/main/java/haus/nightmare/lib3270j/datastream/ReusableByteBufferPool.java

@@ -0,0 +1,72 @@
+package haus.nightmare.lib3270j.datastream;
+
+import java.nio.ByteBuffer;
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
+
+/**
+ * Thread-safe memory pool providing reusable byte buffers for high-throughput
+ * 3270 stream operations, minimizing garbage collector pressure.
+ */
+public final class ReusableByteBufferPool {
+
+    public static final int SIZE_SMALL  = 512;
+    public static final int SIZE_MEDIUM = 4096;
+    public static final int SIZE_LARGE  = 32768;
+
+    private static final int MAX_POOLED_PER_TIER = 32;
+
+    private static final Queue<byte[]> smallPool  = new ConcurrentLinkedQueue<>();
+    private static final Queue<byte[]> mediumPool = new ConcurrentLinkedQueue<>();
+    private static final Queue<byte[]> largePool  = new ConcurrentLinkedQueue<>();
+
+    private ReusableByteBufferPool() {}
+
+    /**
+     * Acquires a pooled byte array with at least the specified capacity.
+     */
+    public static byte[] acquire(int minCapacity) {
+        if (minCapacity <= SIZE_SMALL) {
+            byte[] b = smallPool.poll();
+            return (b != null) ? b : new byte[SIZE_SMALL];
+        } else if (minCapacity <= SIZE_MEDIUM) {
+            byte[] b = mediumPool.poll();
+            return (b != null) ? b : new byte[SIZE_MEDIUM];
+        } else if (minCapacity <= SIZE_LARGE) {
+            byte[] b = largePool.poll();
+            return (b != null) ? b : new byte[SIZE_LARGE];
+        }
+        return new byte[minCapacity];
+    }
+
+    /**
+     * Acquires a ByteBuffer wrapping a pooled array up to minCapacity.
+     */
+    public static ByteBuffer acquireByteBuffer(int minCapacity) {
+        byte[] b = acquire(minCapacity);
+        return ByteBuffer.wrap(b);
+    }
+
+    /**
+     * Returns a buffer to the pool for reuse if it matches a standard tier.
+     */
+    public static void release(byte[] buffer) {
+        if (buffer == null) return;
+        if (buffer.length == SIZE_SMALL && smallPool.size() < MAX_POOLED_PER_TIER) {
+            smallPool.offer(buffer);
+        } else if (buffer.length == SIZE_MEDIUM && mediumPool.size() < MAX_POOLED_PER_TIER) {
+            mediumPool.offer(buffer);
+        } else if (buffer.length == SIZE_LARGE && largePool.size() < MAX_POOLED_PER_TIER) {
+            largePool.offer(buffer);
+        }
+    }
+
+    /**
+     * Clears all pools to release held memory.
+     */
+    public static void clear() {
+        smallPool.clear();
+        mediumPool.clear();
+        largePool.clear();
+    }
+}

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLConnection.java

@@ -77,6 +77,34 @@ public class ECLConnection {
         if (props != null) {
             this.properties.putAll(props);
             convertData(this.properties);
+
+            String h = this.properties.getProperty(ECLSession.SESSION_HOST);
+            if (h == null) h = this.properties.getProperty("host");
+            if (h == null) h = this.properties.getProperty("Host");
+            if (h == null) h = this.properties.getProperty("SESSION_PRINT_SESSION_HOST");
+            if (h != null && !h.trim().isEmpty()) this.host = h.trim();
+
+            String p = this.properties.getProperty(ECLSession.SESSION_PORT);
+            if (p == null) p = this.properties.getProperty("port");
+            if (p == null) p = this.properties.getProperty("Port");
+            if (p == null) p = this.properties.getProperty("SESSION_HOST_PORT");
+            if (p == null) p = this.properties.getProperty("SESSION_PRINT_SESSION_HOST_PORT");
+            if (p != null && !p.trim().isEmpty()) {
+                try { this.port = Integer.parseInt(p.trim()); } catch (NumberFormatException ignored) {}
+            }
+
+            String cp = this.properties.getProperty(ECLSession.SESSION_CODE_PAGE);
+            if (cp == null) cp = this.properties.getProperty("code_page");
+            if (cp == null) cp = this.properties.getProperty("codepage");
+            if (cp == null) cp = this.properties.getProperty("CodePage");
+            if (cp != null && !cp.trim().isEmpty()) this.codePage = cp.trim();
+
+            String lu = this.properties.getProperty(ECLSession.SESSION_LU_NAME);
+            if (lu == null) lu = this.properties.getProperty("lu_name");
+            if (lu == null) lu = this.properties.getProperty("luname");
+            if (lu == null) lu = this.properties.getProperty("SESSION_PRINT_SESSION_LU_NAME");
+            if (lu != null && !lu.trim().isEmpty()) this.luName = lu.trim();
+
             String asu = this.properties.getProperty(ECLSession.SESSION_AUTO_SYS_UNLOCK);
             if (asu != null) {
                 this.autoSysUnlock = "true".equalsIgnoreCase(asu) || "1".equals(asu);

lib3270j/src/main/java/haus/nightmare/lib3270j/ecl/ECLErr.java

@@ -11,6 +11,8 @@ public class ECLErr extends Exception {
     private String id = "";
     private String text = "";
 
+    private int reasonCode = 0;
+
     public ECLErr() {
         super();
     }
@@ -20,6 +22,21 @@ public class ECLErr extends Exception {
         this.text = text;
     }
 
+    public ECLErr(String location, String msgNum, int reasonCode) {
+        super(formatMsg(location, msgNum, "Reason " + reasonCode));
+        this.tag = location;
+        this.id = msgNum;
+        this.text = "Reason " + reasonCode;
+        this.reasonCode = reasonCode;
+    }
+
+    public ECLErr(String location, String msgNum) {
+        super(formatMsg(location, msgNum, ""));
+        this.tag = location;
+        this.id = msgNum;
+        this.text = "";
+    }
+
     public ECLErr(String tag, String id, String text) {
         super(formatMsg(tag, id, text));
         this.tag = tag;
@@ -27,11 +44,30 @@ public class ECLErr extends Exception {
         this.text = text;
     }
 
-    public ECLErr(String tag, String id, String text, String extra) {
+    public ECLErr(String location, String msgNum, String insert1, int reasonCode) {
-        super(formatMsg(tag, id, text + " " + extra));
+        super(formatMsg(location, msgNum, insert1 + " (Reason " + reasonCode + ")"));
-        this.tag = tag;
+        this.tag = location;
-        this.id = id;
+        this.id = msgNum;
-        this.text = text + " " + extra;
+        this.text = insert1 + " (Reason " + reasonCode + ")";
+        this.reasonCode = reasonCode;
+    }
+
+    public ECLErr(String location, String msgNum, String insert1, String insert2, boolean log) {
+        super(formatMsg(location, msgNum, insert1 + " " + insert2));
+        this.tag = location;
+        this.id = msgNum;
+        this.text = insert1 + " " + insert2;
+    }
+
+    public ECLErr(String location, String msgNum, String insert1, String insert2) {
+        this(location, msgNum, insert1, insert2, false);
+    }
+
+    public ECLErr(String location, String msgNum, String insert1, String insert2, String insert3) {
+        super(formatMsg(location, msgNum, insert1 + " " + insert2 + " " + insert3));
+        this.tag = location;
+        this.id = msgNum;
+        this.text = insert1 + " " + insert2 + " " + insert3;
     }
 
     public ECLErr(Throwable cause) {
@@ -57,14 +93,33 @@ public class ECLErr extends Exception {
     public String getID() { return id; }
     public String GetID() { return id; }
 
+    public String getLocation() { return tag; }
+    public String GetLocation() { return tag; }
+
+    public int getReasonCode() { return reasonCode; }
+    public int GetReasonCode() { return reasonCode; }
+
+    public int getMsgNumber() {
+        if (id != null && id.length() >= 7 && id.startsWith("ECL")) {
+            try {
+                return Integer.parseInt(id.substring(3, 7));
+            } catch (NumberFormatException ignored) {}
+        }
+        return 0;
+    }
+    public int GetMsgNumber() { return getMsgNumber(); }
+
     public String getText() { return text; }
     public String GetText() { return text; }
 
+    public String getMsgText() { return getMessage(); }
+    public String GetMsgText() { return getMessage(); }
+
     public String getErrorText() { return getMessage(); }
     public String GetErrorText() { return getMessage(); }
 
     @Override
     public String toString() {
-        return "ECLErr[tag=" + tag + ", id=" + id + ", text=" + text + "]";
+        return "ECLErr[tag=" + tag + ", id=" + id + ", text=" + text + ", reasonCode=" + reasonCode + "]";
     }
 }