-l is the same as -r, except that it not only retrieves but also locks the
retrieved revision for the caller.
Nok to co old revision and ci as head
$ co -l1.1.1.1 mencvcd
RCS/mencvcd,v --> mencvcd
revision 1.1.1.1 (locked)
done
$ ci -l1.2 -m'- co from my v1.1.1.1. cosmetic changes' mencvcd
RCS/mencvcd,v <-- mencvcd
ci: RCS/mencvcd,v: no lock set by tong for revision 1.1
documented on: 2005.08.04