e> Algebraic Manipulation by Identity Translation (also claimed: "Acronym May Be Ignored Totally"). An early ef="module.php?name=Lexikon&file=search&eid=1&query=pattern-matching">pattern-matching language, developed by C. Christensen of Massachusetts Computer Assocs in 1964, aimed at algebraic manipulation. [Sammet 1969, pp. 454-457]. (1994-12-08)