SOS
SOS: n.,obs. /S-O-S/ 1. An infamously losing text editor.
Once, back in the 1960s, when a text editor was needed for the
PDP-6, a hacker crufted together a quick-and-dirty `stopgap
editor' to be used until a better one was written. Unfortunately,
the old one was never really discarded when new ones (in
particular, TECO) came along. SOS is a descendant (`Son of
Stopgap') of that editor, and many PDP-10 users gained the dubious
pleasure of its acquaintance. Since then other programs similar in
style to SOS have been written, notably the early font editor BILOS
/bye'lohs/, the Brother-In-Law Of Stopgap (the alternate expansion
`Bastard Issue, Loins of Stopgap' has been proposed). 2. /sos/
vt. To decrease; inverse of AOS, from the PDP-10 instruction
set.