class interface GRAPHIC_MODE

creation
   make
      --  Create graphic mode.


feature(s) from GRAPHIC_MODE
   --  Modes

   black
      --  Pixel always black.


   white
      --  Pixel always white.


   pen
      --  Pixel is pen colour (default).


   inverse
      --  Pixel is the inverse of the screen colour.


   nothing
      --  Do nothing.


   inverse_pen
      --  Pixel is the inverse of the pen colour.


   merge
      --  Combine screen and pen colour.



end of GRAPHIC_MODE