资料来源 : Free On-Line Dictionary of Computing

SNOBOL2
     
        A {SNOBOL} variant which existed only briefly.  It featured
        built-in functions, but not programmer-defined ones.
     
        ["SNOBOL2", D.J. Farber, R.E. Griswold and I.P. Polonsky, TR
        Bell Labs, Apr 1964].