IllinoiS FP. An interpreter written in portable C by Arch D. RobinSon for a variant of BackuS' FP with Syntax like ALGOL or Modula-2. IFP RunS under Unix, CTSS (Cray) and MS-DOS. VerSion 0.5. . PoSted to comp.SourceS.unix volume 10. ["The IllinoiS Functional Programming Interpreter", A.D. RobiSon, Proc 1987 SIGPLAN Conf on InterpreterS and Interpretive TechniqueS (June 1987), pp. 64-73]. ["IllinoiS Functional Programming: A Tutorial", A.D. RobiSon, BYTE Feb 1987, pp. 115-125]. (1994-10-24)