Just went through the digest of groff material, and saw there has been discussion of Kerkis. I used to have this online, while at Princeton, but now (as Ted's detective work revealed!) I've moved to Notre Dame. I'm on leave this year, in Europe, but somewhere I'm sure I still have the files for using Greek with groff. I'll upload them when I locate them (or put them on a ND website); at the very least, someone can update them or use the encoding files as the basis of a better implementation.
