GraphColorMode           Sets Screen to Color Graphics Mode

 GraphColorMode;                                                         [TP]

    Sets the display to a 320x200 color display, clearing the screen as it
    does so.

          Notes:    X coordinates (columns) range from 0..319; Y
                    coordinates (rows) range from 0..199. To get back to a
                    regular text display, call Textmode.

                    Text can also be displayed in this mode, allowing 40 x
                    25 characters.

                    This display mode may use colors selected from the
                    palette (See Palette).

                    This procedure also resets the graphics window to
                    (0,0),(319,199), destroying any previous graphics
                    window setting.

  -------------------------------- Example ---------------------------------

           GraphColorMode;          { set to 320x200 color mode }