ICP Draft: http://ircache.nlanr.net/Cache/ICP/ICP-id.txt
Automatic Proxy Configuration File Format:
http://home.netscape.com/eng/mozilla/2.0/relnotes/demo/proxy-live.html
Cache Stats, by Iain Lea:
ftp://ftp.ecrc.de/pub/www/cache/squid/contrib/cache-stats/