V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

RCS
       Reloadable Control Storage


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

RCS
       Remote Connection Service (IBM, OS/2, LAN)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

RCS
       Resource Construction Set


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

RCS
       Revision Control System (Unix, CM, GNU)


The Free On-line Dictionary of Computing (30 December 2018):

Revision Control System
RCS

    (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].

   [Features?  Availability?  URL?]

   (1994-12-23)