rvi is an interface to
rvi attempts to make the process of using
Here is an extract from the
rcs man page:
"The Revision Control System (RCS) manages multiple revisions of files. RCS 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."
rcsintro man page for more details.