Hello, John I don't have access to any other implementation of troff than groff, but I have consulted "The Docu- menter's Workbench", and it seems that groff's mm signature macros have incompatibilities more serious than the omission of the title, and some errors too. For example, it prints the AU attributes only before the last author's name, repeating (due to a typo in the macro) his initials as many times as there are authors, instead of listing those of each author...
Would you please send me the -Tascii and -Tps output generated from the attached source file so that I could see what the result should look like? Anton
sign.mm
Description: application/freemind