Fixes to documentation.

Restored the lines drawn around symbols, it uses fl_color_average to
pick a dark line color that is still deactivatable.  Requested by CE.


git-svn-id: file:///fltk/svn/fltk/trunk@249 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

documentation/Fl_Menu_Button.html

@@ -26,10 +26,10 @@ below the button as shown in the picture.  However an <TT>Fl_Menu_Button</TT>
  may also control a pop-up menu.  This is done by setting the <TT>type()</TT>
 , see below. </P>
 <P>The menu will also pop up in response to shortcuts indicated by 
-putting a ''character in the <TT>label()</TT>. </P>
+putting a '&amp;' character in the <TT>label()</TT>. </P>
 <P>Typing the <TT>shortcut()</TT> of any of the menu items will cause 
 callbacks exactly the same as when you pick the item with the mouse. 
- The ''character in menu item names are only looked at when the menu is 
+ The '&amp;' character in menu item names are only looked at when the menu is 
 popped up, however. </P>
 <P>When the user picks an item off the menu, the item's callback is 
 done with the menu_button as the <TT>Fl_Widget*</TT> argument.  If the 
@@ -59,7 +59,7 @@ its menu items.
 shortcut key.  The menu appears, it waits for the user to pick an item, 
 and if they pick one it sets <TT>value()</TT> and does the callback or 
 sets <TT>changed()</TT> as described above.  The menu item is returned 
-or <TT>NULL</TT>if the user dismisses the menu. 
+or <TT>NULL</TT> if the user dismisses the menu. 
 <H4><A name=Fl_Menu_Button.type>void Fl_Menu_Button::type(uchar)</A></H4>
  If <TT>type()</TT> is zero a normal menu button is produced.  If it is 
 nonzero then this is a pop-up menu.  The bits in <TT>type()</TT>