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

Text Reckoning And Compiling
TRAC

    (TRAC) An interactive macro generator language for
   string manipulation by Calvin N. Mooers and Peter Deutsch of
   Sun Microsystems.  TAC derived ideas from Macro SAP.
   There are versions for PDP-1, PDP-8, PDP-10 and
   PDP-11.

   See also MINT, SAM76.

   E-mail: Preston Briggs .

   ["TRAC: A Procedure- Describing Language for the Reactive
   Typewriter", Calvin N. Mooers, CACM 9(3):215-219 (Mar 1966).
   Rockford Research Inst, 1972].

   [Sammet 1969, pp.448-454].

   ["Macro Processors", A.J. Cole, Cambridge U Press].

   (1994-12-21)