changes: Broken up version of /n/sources/extra/changes/*; one file per changeset
contrindx: Generates a wiki page with the index of /n/sources/contrib/*
doc: Old docs from 1st ed and others sources.
mirror: Mirror of various things that are not in sources
papers: The /sys/doc papers with hand-fixed HTML versions.
plog: Generates emails with sources and patch(1) changes
slides: Troff macros to generate slide presentations
whatsnewwiki: Updates the "what's new" wiki page
wikifs: Experimental versions of wikifs hacking
wikindex: Generate an alphabetical index of all wiki pages