1. Extra Simple Pascal.Subset of Pascal.2. Econometric Software Package.Statistical analysis of time series."Econometric Software Package, User' s Manual", J.P. Cooper, Graduate School of Business, U Chicago.Sammet 1978.3. Extended Self-containing Prolog.4. An early symbolic mathematics system.[A. Rom, Celest Mech 3:331-345 (1971)].(1994-12-08)