The version of [nt]roff in this directory is changed somewhat from the version you may be used to. 1. fonts are in /usr/lib/font/ftXX, where XX is the name of the font (e.g., HI). Source is in ./font/ftXX.c. 2. macro files like -ms are searched for in /usr/lib/tmac/tmac.xxx. Your /usr/lib/tmac may have to be changed. The .so request has been modified to make it a fatal error to try .so non-existent-file; this should head off people who are explcitly including /usr/lib/tmac.s, etc. 3. terminal driving tables for nroff are in /usr/lib/term/tabxxx instead of /usr/lib/term/xxx.