= F =
FM /F-M/ n.
1. [common] Not `Frequency
Modulation' but rather an abbreviation for `Fucking Manual', the
back-formation from RTFM. Used to refer to the manual itself
in the RTFM. "Have you seen the Networking FM lately?"
2. Abbreviation for "Fucking Magic", used in the sense of
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.