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  Include:  FGRAPH.FI, FGRAPH.FD
 
  Type:     INTEGER*2 FUNCTION
 
  Routine:  getpixel( x, y )
            INTEGER*2 x, y
 
            getpixel_w( wx, wy )
            DOUBLE PRECISION wx, wy
 
  Returns:  the pixel value if successful, or -1 if not.
 
  See also: remapallpalette, remappalette, selectpalette,
            setcolor, setpixel, setvideomode
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