Source : Free On-Line Dictionary of Computing

Scratchpad I
     
        A general-purpose language originally for interactive
        {symbolic mathematics} by Richard Jenks, Barry Trager, Stephen
        M. Watt and Robert S. Sutor of {IBM Research}, ca 1971.  It
        features abstract parametrised data types, {multiple
        inheritance} and {polymorphism}.  There were implementations
        for {VM/CMS} and {AIX}.
     
        ["Scratchpad User's Manual", RA 70, IBM (June 1975)].
     
        (1994-12-15)