ref: a9cd342c2e331388c6521ce42a95b850f746a96a
dir: /sys/src/cmd/gs/lib/ras1.upp/
-supModel="SUN rasterfile, 1 Bit, 2 Colors (Ghostscript-Rendering)"
-sDEVICE=uniprint
-dNOPAUSE
-dSAFER
-dupColorModel=/DeviceGray
-dupRendering=/ErrorDiffusion
-dupOutputFormat=/SunRaster
-dupComponentBits={1}