cu(1) on FreeBSD
The text 3a3147641fd2, as FreeBSD 14.2-RELEASE, FreeBSD 14.1-RELEASE, FreeBSD 14.0-RELEASE, FreeBSD 13.4-RELEASE, FreeBSD 13.3-RELEASE shipped it.
call UNIX
Flags it lists
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-a -
-e -
-h -
-l -
-o -
-t