Text Editor and COrrector TECO (originally an acronym for [paper] Tape Editor and COrrector, but later Text Editor and COrrector) 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'. These directories contain a number of different TECO distributions for a number of different platforms. teco32_tv_av TECO-32 for OpenVMS I64 (not the slow one that crashes all the time).