Adventure Definition Language
(ADL) An adventure game language interpreter designed by Ross Cunniff <cunniff@fc.hp.com> 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.