Editing TRAC (programming language) (section)

== Influence and usage ==
TRAC was later implemented on the [[PDP-8]], [[PDP-10]], and [[PDP-11]].

There have been various languages inspired by TRAC.  To avoid any trouble with Mooers, they renamed primitives and/or used different metacharacters.  In SAM76's case, primitives were added, according to Claude Kagan, "because TRAC is baby talk".  In MINT's case, primitives were added to give access to a sophisticated text editor machinery.
* one perceived shortcoming of TRAC was lack of full extensibility: some TRAC primitive functions are sensitive to the distinction between a null (zero-character) argument and a nonexistent (non-delimited) one, but beyond its last non-null argument, a user-defined function cannot make the distinction.  [[SAM76]] was a TRAC-like language which eliminated that limitation. 
* [[Russ Nelson]] implemented an [[emacs]] extension language named MINT ('''M'''INT '''I'''s '''N'''ot '''T'''RAC).  This language is used by the [[FreeDOS]] editor [[FreeMACS]].
* [[John Walker (programmer)|John Walker]] implemented an embeddable extension language library DIESEL <ref>{{Cite web|url=https://www.fourmilab.ch/diesel/|title=DIESEL - Dumb Interpretively Evaluated String Expression Language|website=www.fourmilab.ch}}</ref> ('''D'''umb '''I'''nterpretively '''E'''valuated '''S'''tring '''E'''xpression '''L'''anguage) originally for menu macro processing in [[AutoCAD]].<ref>{{Cite web|url=https://www.fourmilab.ch/nav/topics/components.html#diesel|title=Software Components / Embedded Systems|website=www.fourmilab.ch}}</ref>

TRAC was used by [[FTP Software]] in its PC/TCP product as the modem dialer scripting language.

TRAC was also used as a front end on Digital Productions Cray renderer for films, including ''[[The Last Starfighter]]''.