calendar(1) on OpenBSD
The text 096be8a0c4e7, as OpenBSD 5.8, OpenBSD 5.7, OpenBSD 5.6, OpenBSD 5.5, OpenBSD 5.4 shipped it.
reminder service
Flags it lists
-
-A -
-B -
-a -
-b -
-f -
-t