 (bdiff) - big diff
 (chghist) - change the history entry of an SCCS delta
 (comb) - combine SCCS deltas
 (rmdel) - remove a delta from an SCCS file
 (sccsdiff) - compare two versions of an SCCS file
 (sccsfile) - format of SCCS file
 (sccshelp) - ask for help
compact, uncompact, ccat (1) - compress and uncompress files, and cat them
