Step Restore
 Used to re-draw a screen image.
──────────────────────────────────────────────────────────────────────────────

 This option may be used by you to specify a program to - re-draw a graphics
 screen.

   █▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Step Display Definition ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀█
   █ Expression:                                                          █ 
   █▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄█ 
                                                                            

 This function will be called after the Before Step function and only if the
 screen is in graphics mode.