From the begining of the advsys.doc file: ADVSYS - An Adventure Writing System Version 1.2 by David Betz 114 Davenport Avenue Manchester, NH 03103 (603) 625-4691 (home) July 14, 1986 Copyright (c) 1986, by David Betz All Rights Reserved Permission is hereby granted for unrestricted non-commercial use ADVSYS is a special purpose programming language that was specifically designed to be used to write computer text adventure games. It includes a facility for defining the kinds of objects that are common in adventures. Some objects represent locations on the game map, some objects represent things that the player can find while exploring the adventure world, and some objects represent other characters that the adventurer can encounter during his or her journeys. The adventure language also provides a facility to define actions. Actions are short sections of code that determine what happens in response to a command from the player. These two concepts, "objects" and "actions" form the basis for the adventure language.