How to Optimize a Map in Hammer Editor: 10 Steps (with Pictures)
Valve Hammer Editor - Valve Developer Community
How to Optimize a Map in Hammer Editor: 10 Steps (with Pictures)
Valve's Hammer Editor Logo by SpAMCAN0 on DeviantArt
How to Use the basic tools of the Valve Hammer Map Editor « Software Tips :: WonderHowTo
I was using the hammer editor and noticed that ragdolls eyes stare at you all the time and its so creepy i kinda wanna stop messing with this map for now :