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  Include:  FGRAPH.FI, FGRAPH.FD
 
  Type:     INTEGER*2 FUNCTION
 
  Routine:  setvideomode( mode )
            INTEGER*2 mode
 
            mode: $DEFAULTMODE, $ERESCOLOR, $ERESNOCOLOR, $HERCMONO,
                  $HRES16COLOR, $HRESBW, $MAXCOLORMODE, $MAXRESMODE,
                  $MRES4COLOR, $MRES16COLOR, $MRES256COLOR,
                  $MRESNOCOLOR, $ORESCOLOR, $TEXTBW40, $TEXTBW80,
                  $TEXTC40, $TEXTC80, $TEXTMONO, $VRES2COLOR,
                  $VRES16COLOR
 
  Returns:  the number of text rows if successful, or 0 if not.
 
  See also: getvideoconfig, settextrows, setvideomoderows
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