XPinkey()
 Same as Clipper's Inkey() with the Handlers from above
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   Function:   XPinkey()

               This function is used for keyboard input from the
               routines from this section (currently, XPmenu()). It could also
               be used by your Application, that's why it's documented.

               See XPinkeyBlock() for details.

   Syntax:     XPinkey(n) --> nKey

   Arguments:  n as in Inkey(n)

   Returns:    Depends on the Handler you installed. By default
               it uses Inkey(), you might want to include some code of
               your own (screen blanker, running clock, timer, whatever..),
               you might always return the Inkey() setting, however.

   Usage:      See XPinkeyBlock() for source.