cvs(1) on OpenBSD
The text cf955122fda9, as OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0 shipped it.
Concurrent Versions System
Flags it lists
-
--help -
--version -
-D -
-H -
-P -
-Q -
-R -
-b -
-d -
-e -
-f -
-k -
-l -
-n -
-p -
-q -
-r -
-t -
-v -
-w -
-x -
-z