Test Door (Portal 2)
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Use prop_testchamber_door, name it "door1" or something like that.
It's basically like a normal "prop_door_rotating".
1. Go to flags and check "door silent", and uncheck "touch opens"
2. Make a brush with the texture "tools/toolstrigger" and tie it to a "trigger_multiple"
3. Make outputs for the door to do the things you want.