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/wayts/ The mutant cousin of TOPS-10 used on a handful of
systems at SAIL up to 1990. There was never an "official"
expansion of WAITS (the name itself having been arrived at by
a rather sideways process), but it was frequently glossed as
"West-coast Alternative to ITS". Though WAITS was less
visible than ITS, there was frequent exchange of people and
ideas between the two communities, and innovations pioneered
at WAITS exerted enormous indirect influence. The early
screen modes of Emacs, for example, were directly inspired
by WAITS's "E" editor - one of a family of editors that were
the first to do "real-time editing", in which the editing
commands were invisible and where one typed text at the point
of insertion/overwriting. The modern style of multi-region
windowing is said to have originated there, and WAITS alumni
at XEROX PARC and elsewhere played major roles in the
developments that led to the XEROX Star, the Macintosh, and
the Sun workstations. Bucky bits were also invented there
--- thus, the ALT key on every IBM PC is a WAITS legacy. One
notable WAITS feature seldom duplicated elsewhere was a
news-wire interface that allowed WAITS hackers to read, store,
and filter AP and UPI dispatches from their terminals; the
system also featured a still-unusual level of support for what
is now called "multimedia" computing, allowing analog audio
and video signals to be switched to programming terminals.