Hello. I know I've been posting a lot here. This is probably my 3rd post. But after this will be my last one for a while. I've finished my map I've been working on for a week now. I've figured out all the problems of my map and fixed them. But there is one problem I've been wondering about. When I approach a door. It seems the read text doesn't appear. "Press "E" to open this door." How do I make that appear? 
