bug#43633: 28.0.50; Include definitions in glossary for: extensible, customizable, self-documenting, real-time display editor

[Richard Stallman]

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  > Emacs is the extensible, customizable, self-documenting real-time
  > display editor.

Are there any editors in widespread use that are not real-time and
display?  I know some still exist -- for instance, ed -- but perhaps
it is no longer useful to say "real-time display" in that sentence.

-- 
Dr Richard Stallman
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)