Source : Free On-Line Dictionary of Computing

Digital Simulation Language
     
         (DSL) Extensions to {Fortran} to simulate {analog
        computer} functions.  Version DSL/90 ran on the {IBM 7090}.
     
        ["DSL/90 - A Digital Simulation Program for Continuous System
        Modelling", Proc SJCC 28, AFIPS, Spring 1966].
     
        [Sammet 1969, p 632].
     
        (1996-10-13)