V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

VT100
       Virtual Terminal 100 (DEC), "VT-100"


The Free On-line Dictionary of Computing (30 December 2018):

vt100

    DEC's definitive CRT video terminal of the
   early/mid 1980s.  Its control codes and escape sequences
   still form the basis of the xterm set and of the ANSI or
   IBM PC standards.  VT100 compatibility is still provided by
   most terminal emulators.

   [On-line documentation?]

   (1995-03-28)