ftp(1) on OpenBSD
The text bd27f71c1bd8, as OpenBSD 3.9 shipped it.
ARPANET file transfer program
Flags it lists
-
-4 -
-6 -
-A -
-E -
-P -
-V -
-a -
-d -
-e -
-g -
-i -
-m -
-n -
-o -
-p -
-r -
-t -
-v