grotty(1) on Linux
The text fed3448a8e2f, as Debian 5.0 (Lenny) shipped it.
groff driver for typewriter-like devices
Flags it lists
-
-B -
-F -
-U -
-b -
-c -
-d -
-f -
-h -
-i -
-o -
-u -
-v