|(software, tool)||Revision Control System - (RCS) A version control system that
automates the storing, retrieval, logging, identification, and
merging of revisions. RCS is useful for text that is revised
frequently, for example programs, documentation, graphics,
papers, and form letters.|
Unix manual page: rcs(1).
["RCS -- A System for Version Control", Walter F. Tichy, Software--Practice & Experience 15, 7, July 1985, 637-654].