Source : Free On-Line Dictionary of Computing

SCL
     
         1. {System Control Language}.
     
        2. Symbolic Communication Language.  Designed primarily for
        the manipulation of symbolic formulas.  Featured pattern
        matching (which was partly the inspiration for SNOBOL), string
        operations in buffers, and automatic storage management.  "A
        Language for Symbolic Communication", C.Y. Lee et al, Tech Mem
        62-3344-4, Bell Labs, Sept 1962.