rcs (Revision Control System) tutorials, reference manuals

[John O'Brien]

Our system is considering going to rcs (Revision Control System) for
source code control.  The big problem at this point is that the only
documentation we have at this point is the "man" pages, which are just
a start, and don't really cover the concepts, details, or provide a
tutorial.  Could somebody, anybody out there point me to some good doc-
umentation on rcs?

				John F. O'Brien