dump(8) on OpenBSD
The text b53bf31e3c98, as OpenBSD 5.7, OpenBSD 5.6 shipped it.
filesystem backup
Flags it lists
-
-0-9 -
-B -
-S -
-T -
-U -
-W -
-a -
-b -
-c -
-d -
-f -
-h -
-n -
-s -
-u -
-w