Inform 5 is a compiler of Infocom-format story files, written by Graham Nelson. Final versions: Compiler: 5.5 Release 1502, July 3rd 1995, Library: 5/12, October 24th 1995.
(For all practical purposes, this version has been superseded by Inform 6.)
general description of Inform 5.5 and the structure of this directory
What's New in Inform 5.5, v1502