updated help key for macOS

docs/index.html

@@ -2096,6 +2096,11 @@
       <th>Key (Standard)</th>
       <th>Key (macOS)</th>
     </tr>
+    <tr>
+      <td>Open context-sensitive help</td>
+      <td>F1</td>
+      <td>Shift-Cmd + ?</td>
+    </tr>
     <tr>
       <td>Move Up</td>
       <td>Up arrow</td>
@@ -2176,11 +2181,6 @@
       <td>Alt + Return</td>
       <td>Cmd + Return</td>
     </tr>
-    <tr>
-      <td>Open context-sensitive help</td>
-      <td>F1</td>
-      <td>F1</td>
-    </tr>
     <tr>
       <td>Exit emulator</td>
       <td>Control + Q</td>

src/common/PKeyboardHandler.cxx

@@ -811,8 +811,12 @@ PhysicalKeyboardHandler::DefaultMenuMapping = {
   {Event::UITabNext,                KBDK_BACKSPACE},  // back (FRY)
 #else // defining duplicate keys must be avoided!
   {Event::UIPrevDir,                KBDK_BACKSPACE},
+#ifdef BSPF_MACOS
+  {Event::UIHelp,                   KBDK_SLASH, KBDM_SHIFT | CMD},
+#else
   {Event::UIHelp,                   KBDK_F1},
 #endif
+#endif
 };
 
 #ifdef GUI_SUPPORT