source
= S =
space-cadet keyboard
source of all good bits n.
A person from whom (or a place
from which) useful information may be obtained. If you need to
know about a program, a guru might be the source of all good
bits. The title is often applied to a particularly competent
secretary.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.