groff_man(7) on Linux
The text 2bb2f2965b03, as Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
groff `man' macros to support generation of man pages
Flags it lists
-
-rC1 -
-rD1 -
-rLL -
-rLT -
-rP -
-rS -
-rX -
-rcR