Something that has eluded me for my whole mapping career.
How do you make a door not open the width of itself? Like when you open the door it opens the width of itself so that when its completely open the textures are mixed together, like what it would look like if you built 2 blocks same size in each other.
I see it done in Half Life and many other mods, but not very many custom maps. I acheived it one time, by accident, and cant remember how I did it, and I have lost that map's rmf.