calibrate_ppa --version (return code: 0)
calibrate_ppa: unrecognized option '--version'
calibrate_ppa --help (return code: 0)
usage: calibrate_ppa [ options ] [ -o <outfile> ]]
Produces various PixMap (PPM) files used for calibrating pnm2ppa.
NOTE: The size of a full-page PixMap is 100MB!!.
These PixMaps should be piped directly to pnm2ppa, except in the case of
the -g option, where the PixMap should be viewed or printed by other means.
-g, --gamma produce gamma.ppm (10MB, used in color calibration).
-h, --help displays this help text.
-o <outfile> output to file <outfile>, "-o -" means stdout (default)
-p <n> create test pattern number <n>
--align pattern 0: align print heads. (default)
--test pattern 1: test alignment.
--clean pattern 2: clean print head.
--center pattern 3: center paper.
-s <paper> default papersize (a4, legal, letter = us (default))