ref: 47ec5de29e56c4cf223e0582b930b88ca2a589ee
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}