ybmtopbm - convert a Bennet Yee 'face' file to PBM
This program is part of Netpbm(1).
ymtopbm reads a file acceptable to the face and xbm programs by Bennet Yee (email@example.com). and writes a PBM image as output.
Copyright (C) 1991 by Jamie Zawinski and Jef Poskanzer.