Here's an idea for improving the Src docs' category pages. I've made two columns (as best I can) and cut down on the number of entries, though there is still plenty of room down the right side. Problems: lots of HTML to handle what the wiki can't, can't have editable sections, can't seem to get cell padding to work, and there's a phantom code box in Abstract Mapping.
If this design doesn't prove too unpopular, I'll add colours to each section too, perhaps even some snazzy 'watermark' backgrounds. See User:Zozart/category_test!
Ammunition | Animals | Animated Clouds & Sky | Antlions | Beams | Bushes | Cables | Color | Combat | Combine | Creatures | Doors | Dust | Elevators | Environmental Lighting | Explosions | Fire | Fog | Foliage | Glass | Grass | Headcrab | Health | Ladders | Lasers | Lighting | Moving Clouds | Music | Optimization | Outdoors | Physics | Retinal scanners | Ropes | Smoke | Sound | Special effects | Sun | Terrain | Trains | Trees | Turrets | Water | Weather | Windows | Zombie