. "TECO (/\u02C8ti\u02D0ko\u028A/; originally an acronym for [paper] Tape Editor and COrrector, but later Text Editor and COrrector, then Text Editor Character Oriented) is a text editor originally developed at the Massachusetts Institute of Technology (MIT) in the 1960s, after which it was modified by \"just about everybody\". TECO was a direct ancestor of Emacs, which was originally implemented in TECO macros."@en . "TECO"@en .