README for groff

REQUIREMENTS

PRE/POST-INSTALL

as of groff version 1.22.2 release 2 the default papersize for groff can 
be defined in /etc/papersize. Just add the required papersize like 'letter' 
or 'a4' here, default is 'letter'.

See 
http://www.gnu.org/software/groff/manual/html_node/DESC-File-Format.html
for more informations.