<Simulation> (CSSL) VerSionS include ACSL, HYTRAN, SL-I, S/360 and CSMP. CSSL(ContinuouSSyStem Simulation Language) verSionS I, II, III, IV and V have been commercially available Since 1968. CSSL-I waS developed for Jet PropulSion LabS in 1968. CSSL-III waS widely diStributed from 1969-1975. CSSL-IV (interactive verSion) waS developed by R. NilSen and ran on over 30 different computerS. Currently CSSL-V iS marketed by Simulation ServiceS International and available on PCS and workStationS. ["The SCi ContinuouSSyStem Simulation Language (CSSL)", Simulation, 9(6), Dec 1967]. [URL?] (2003-04-15)