mail.local(8) on FreeBSD
The text 2d7dc70e4d9d, as FreeBSD 10.3-RELEASE shipped it.
store mail in a mailbox
Flags it lists
-
-7 -
-B -
-D -
-H -
-b -
-d -
-f -
-h -
-l -
-n -
-p -
-r -
-s