From Quake Wiki

A very talented creator from Spain of all things quake! :-D

His quake engine Telejano was derived from the then popular TomazQuake. It added the ability to enhance Quake, Quake Mission Packs, user-made maps, and user-made mods, without having to recompile/remake them. It added a new particle system for more realistic stuff like: fire particles, light fx, sparks fly when a bullet hits the wall, explosion effects, water caustics, water makes waves, lava balls leave smoke trails, launched rockets leave smoke trails, blood looks more real, coronas on fire torches, fire on lava, surface fog, scripted localmenus make setting up eyecandy easy, and much more cool effects.