Omenu.prg
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   BarActivate( <hBar>, [<nKey>] ) --> nMenuChoice

   Activate bar menu as primary task (nothing else active).

   BarDeInstall( <hBar> ) --> hBar

   Uninstall menu bar from SET KEY handler.

   BarDisplay( <hBar> ) --> hBar

   Display a menu bar to the screen.

   BarInstall( <hBar> ) --> hBar

   Install a menu bar into the SET KEY handler.

   BarMenuChoice( <hBar>, [<nChoice>] ) --> nChoice.

   Retreives the last menu selection.

   BarNew( <cColor>, <nBorder> ) --> hBar

   Create a new menu bar and return a handle to it.

   MenuAdd( <hMenu> ) --> hBar

   Add a menu to menu bar.

   MenuDisplay( <hMenu> ) --> hMenu

   Display a menu to the screen.

   MenuNew( <cTitle> ) --> hMenuHandle

   Create a new menu and return a new handle to it.

   PostExitBlock( [<bBlock>] ) --> bOldBlock

   Post a code block to execute when a function is terminated.

   PromptAction( <hMenu>, <nID>, <bBlock> ) --> hMenu

   Change the menu action block.

   PromptAdd( <hMenu>, <nID>, <cText>, <bBlock> ) --> hMenu

   Add a prompt to the menu.

   PromptAddLine( <hMenu> ) --> hMenu

   Add a line separator between prompts.

   PromptAddSub( <hMenu>, <nID>, <hSubMenu> ) --> hMenu

   Add a hierarchical submenu to an existing menu.

   PromptAddToggle( <hMenu>, <nID>, <cText>, <bBlock> ) --> hMenu

   Has to be separate from PromptAdd() because of needing to add <bBlock>
   to key event array.

   PromptCheck( <hMenu>, <nID> ) --> hMenu

   Mark a menu prompt with a check mark.

   PromptEnable( <hMenu>, <nID> ) --> hMenu

   Ungray a menu prompt.

   PromptGray( <hMenu>, <nID> ) --> hMenu

   Gray a menu prompt.

   PromptIsChecked( <hMenu>, <nID> ) --> lChecked

   Determine if a menu prompt is checked.

   PromptIsEnabled( <hMenu>, <nID> ) --> lEnabled

   Determine if a menu prompt is active.

   PromptQuickKey( <hBar>, <hMenu>, <nID>, <nKey> ) --> hMenu

   Assign nKey to nID.

   PromptUnCheck( <hMenu>, <nID> ) --> hMenu

   Uncheck menu prompt.