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WAITS:: /wayts/ n. 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.