I saw this extra feature on the downloadable special edition of the Hitchhiker's Guide TV series a little while back, which talks about the engine behind the infocom game and the language that it's programmed in.

BBC Micro Live - Douglas Adams BBC Micro Live presenter, Conner 'Freff' Cochran, talks to Douglas Adams about The Hitchhiker's Guider to the Galaxy computing game and future software plans. https://www.facebook.com/BBCArchive/videos/594990580873976/?...