zfsbootcfg(8) on FreeBSD
The text a5fbd3c83da1, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
specify zfsboot options for the next boot
Flags it lists
-
-k -
-n -
-p -
-t -
-v -
-z