HIRES                 Activate 640x200 Graphics Screen               pp 164

 Syntax:  HiRes ;

 Type:    N/A

 Form:    Graphics Procedure

 Purpose: Active the 640x200 graphics screen.

 Notes:   Col (x) coordinates are 0..619.  Row (y) cooridinates are 0..199.
          The background color is always black, and the foreground color is
          selected by the HiResColor procedure.


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 Usage:
       BEGIN
          HiRes ;
       END.