FWIW: One format provided by Groff MM macros are business letters. It may not fit all types of communications, but it was the way business letters written in Ma Bell for many years.
Keep in mind that I'm still working on this code. It is far from done. Source: http://ppl.ug/AcT6H0xSB1o/ Output: http://ppl.ug/-isIJ_7crRc/ -- Luis Anaya papo anaya aroba hot mail punto com "Do not use 100 words if you can say it in 10" - Yamamoto Tsunetomo