space-cadet keyboard = S = SPACEWAR

spaceship operator n.

The glyph <=>, so-called apparently because in the low-resolution constant-width font used on many terminals it vaguely resembles a flying saucer. Perl uses this to denote the signum-of-difference operation.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.