From the introduction:
Some spell construction systems attempt to provide all the functionality of AD&D spells by enumerating hundreds of specialized primitives. The high number of primitives present in the some systems reflects AD&D’s lack of a distinction between effects, the actual physical, biological, or psychic manifestations of magical forces, and operators which act to shape those forces into useful configurations.
Presents an innovative and intriguing, if complicated, system of spell casting. This item originally was posted to Usenet. Subsequently, saved documents in text format have circulated widely on the internet.