This might help its a collection of acronymns used on ROFF
http://css.sbcma.com/timj/acronyms.htm
Many thanks to timj who has helped me manuver thru ROFF and help me to
understand what this is all about. In fact this is really awesome when
you understand what everyone is saying. I really encourage new people
to check out timj's site it is loaded with info about ROFF
http://css.sbcma.com/timj
Steve