mount_nfs(8) on OpenBSD
The text 0dd3da362b7d, as OpenBSD 3.7 shipped it.
mount NFS file systems
Flags it lists
-
-2 -
-3 -
-I -
-P -
-R -
-T -
-U -
-a -
-b -
-c -
-d -
-g -
-i -
-l -
-o -
-r -
-s -
-t -
-w -
-x