 Luxs name itself is a game reference. Strategic Simulations Inc.  produced a series of computer games based on AD&D, one of which is  called Pool of Radiance In the game, you have to search out  passwords for unlocking certain locations. Lux is one of a trio of  passwords you need for an island keep filled with skeletons. They  are Lux, Samosud, and Shestni.