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

[Drew Adams]

> What do others think?  Should we delete the "display" in "display editor"?

Yes.  I don't even know what it means.  A guess is that
a nondisplay editor is one that doesn't use a display
(e.g., monitor) - like old teletype line-oriented editors.
I guess `ed' or `sed' would be an example of a nondisplay
editor.