I am finally starting to optimize my map, and I can't for the life of me figure out how to use areaportals. I assumed that they were put in doorways to stop rendering of stuff in the background rendering. However, when I load up my map, they are solid: I cant walk through them. They show the "areaportal" texture, and stop rendering, but I can see them. Also, I really dont get the use of hint/skips! I have read multiple tutorials, and still dont get it. Can someone come up with an explanation for a noob? Thanks in advance!