master
teach id(1) about whoami(1) and groups(1) run modes; removes shell wrappers
add an EXIT STATUS section for /usr/bin;
If a command or interface first appeared in PWB/UNIX, UNIX System III or UNIX System V mention it. Only do so in manual pages with a pre-existing HISTORY section.
Ignore extra groups that don't fit in the buffer passed to getgrouplist(3)
Document what remains of the 2BSD heritage. All facts found on the CSRG CD 1 in the 2bsd directory. Feedback and ok jmc@, ok sobrado@.