merge/revert wording from devbr6; keep it applicable to all platforms (see https://trac.osgeo.org/grass/ticket/1891 and earlier discussions about tcltk gui closing the terminal); repeating the label doesn't add much help

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@56066 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/docs/wxGUI.html

@@ -23,9 +23,13 @@ GUI: wxpython
 
 or by the environmental variable <tt>GRASS_GUI</tt>.
 <p>
-The GUI can be quit by selecting the 'File -&gt; Quit' menu item.
-On MS Windows when the GRASS is stared without interactive command line,
-'File -&gt; Quit' ends the whole GRASS session.
+The GUI can be quit by selecting the 'File -&gt; Exit GUI' menu item.
+<!-- is &rarr; allowed? -->
+On MS Windows when GRASS is launched without an interactive command line
+this will end the entire GRASS session. In other cases the terminal
+window will remain running; type <tt>exit</tt> at the command prompt
+to end the GRASS session.
+<p>
 The GUI can be restarted from the GRASS command line prompt by typing
 
 <div class="code"><pre>

gui/wxpython/xml/wxgui_items.xml

@@ -45,9 +45,9 @@
     <description>Launches script file.</description>
   </wxgui-item>
   <wxgui-item name="Quit">
-    <label>Quit</label>
+    <label>Exit GUI</label>
     <handler>OnCloseWindow</handler>
-    <description>Quit</description>
+    <description>Quit the GRASS wxGUI session.</description>
     <shortcut>Ctrl+Q</shortcut>
     <wx-id>ID_EXIT</wx-id>
   </wxgui-item>