A lot more tools and information are coming out for those who aren't happy to just enjoy Halo 2 from the perspective of a normal user, but want to sneak into the engine and tinker a bit. VerdaFolio at demented puppy dot com notes two such released: one is a page of trainers for Halo 2 at EvolutionX. The second is a white paper by Iron Forge on Halo 2, detailing his exploration of the game, and including information that should be of use to modmakers.