The program consists on giving meaning to an adventure, by writing the messages to the transitions between states.
Notes
An experiment in Common Lisp, related to other similar experiments of deconstruction of what constitutes a text adventure, carried out by the same author. The text file that comes with this experiment does not seem to give enough instructions to know how to use it. The code in Lisp has some bugs that must be corrected before executing it, and despite all this, according to the forum thread about the XComp (the competition in which this experiment participated) nobody has found a way to make it work.