Source : Free On-Line Dictionary of Computing

Adventure Definition Language
     
         (ADL) An {adventure} game language
        {interpreter} designed by Ross Cunniff  and
        Tim Brengle in 1987.  ADL is semi-{object-oriented} with
        {Lisp}-like {syntax} and is a superset of {DDL}.  It is
        available for {Unix}, {MS-DOS}, {Amiga} and {Acorn}
        {Archimedes}.
     
        {(ftp://ftp.uu.net/usenet/comp.sources.games/volume2)},
        {(ftp://ftp.wustl.edu/systems/amiga/fish/fish/f0/ff091)}.
     
        (1995-03-20)