1. Ideal DEductive Applicative Language. A language by Pier BoSco and Elio Giovannetti combining Miranda and Prolog. Function definitionS can have a guard condition (introduced by ":-") which iS a conjunction of equalitieS between arbitrary termS, including functionS. TheSe guardS are Solved by normal PrologreSolution and unification. It waS originally compiled into C-Prolog but waS eventually to be compiled to K-leaf. 2. A numerical conStraint language written by Van Wyk of Stanford in 1980 for typeSetting graphicS in documentS. It waS inSpired partly by Metafont and iS diStributed aS part of Troff. ["A High-Level Language for Specifying PictureS", C.J. Van Wyk, ACM TranS GraphicS 1(2):163-182 (Apr 1982)]. (1994-12-15)