I've been wondering what you guys think of using the cordon tool to compile maps (Hammer 3.5).
For me they never work. I always get "brush outside world" errors that normally do not appear if I compile without a cordon. If I check out said brushes, they are usually outside the cordon bounds, so why is the map even compiling them?
I think this error is caused when the cordon selects a large brush, but part of it is OUTSIDE the cordon bounds.
However I can't work around that - the cordon can only go in a square/rectangle shape, and I'd have to do major remapping to get one segment of my map to fit snuggly inside a cordon.