Great Renaming: n. The flag day in 1987 on which all of the
non-local groups on the Usenet had their names changed from the
net.- format to the current multiple-hierarchies scheme. Used esp.
in discussing the history of newsgroup names. "The oldest sources
group is comp.sources.misc; before the Great Renaming, it was
net.sources." There is a Great Renaming FAQ
(http://www.vrx.net/usenet/history/rename.html) on the Web.