OUTPUTFORMAT
  DRIVER AGG/PNG8
  EXTENSION "png"
  FORMATOPTION "QUANTIZE_FORCE=on"
  FORMATOPTION "QUANTIZE_COLORS=256"
  FORMATOPTION "GAMMA=0.75"
  IMAGEMODE RGB
  MIMETYPE "image/png; mode=8bit"
  NAME "png8"
  TRANSPARENT ON
END # OUTPUTFORMAT
