(CSSL) Versions include ACSL, HYTRAN, SL-I, S/360 and CSMP. CSSL(Continuous System 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 Continuous System Simulation Language (CSSL)", Simulation, 9(6), Dec 1967]. [URL?] (2003-04-15)