RCS, the Revision Control System, manages multiple revisions of files.
RCS can store, retrieve, log, identify, and merge revisions.  It is
useful for files that are revised frequently, e.g. programs,
documentation, graphics, and papers.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
-rw-rw-r-- 20025/200    302665  614400  49.3% -lh5- 78c0 Mar 30  1998 rcs-5.7-bin.tar
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         1 file   302665  614400  49.3%            Mar 16  1998