crontab(1) on OpenBSD
The text 9f8b01797e53, as OpenBSD 6.6, OpenBSD 6.5, OpenBSD 6.4, OpenBSD 6.3, OpenBSD 6.2, OpenBSD 6.1, OpenBSD 6.0, OpenBSD 5.9 shipped it.
maintain crontab files for individual users
Flags it lists
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-e -
-l -
-r -
-u