groffmacros not appearing in AT&T
groff -ms macros have a few minor extensions compared to the
troff -ms macros.
Improved accent marks. See ms Strings and Special Characters, for details.
Indented display. The default behavior of AT&T
-ms was to indent; the
groff default prints displays flush left
with the body text.
Print text in
constant width (Courier) font.
Indexing term (printed on standard error). You can write a script to capture and process an index generated in this manner.
The following additional number registers
Specifies a minimum space between columns (for multi-column output);
this takes the place of the
GW register that was documented but
apparently not implemented in AT&T
Several new string registers are available as well. You can change these to handle (for example) the local language. See ms Strings and Special Characters, for details.