[9fans] troff fonts

[matt]

I've been learning troff at last. As part of that I made this page so I 
could see what fonts would work.

http://plan9.bell-labs.com/sources/contrib/maht/troff_fonts.ps
or just

http://plan9.bell-labs.com/sources/contrib/maht/fonts.tr

or /n/sources/contrib/maht of course, however you choose


Is there an easy way to add new fonts ?
I've done a quick search but nothing fruitful so far.