Reality Factory

how do you create them, i cant do it!

Dude...this is in the manual. Head over to the Downloads section and download the manual. There is also a free E-Book.

I shall make everyone hate me by providing a completely valid but generally disapproved answer:

Use a cut brush, but be CAREFUL, you could screw stuff up if you aren't paying attention.

That would be for a doorway, not a door.

So, he wants a door to go in the doorway...

Or does he want a portal?

I would like a door to go in the doorway.

Well,it's all explained in the manual,but whatever.Make a bruch with the size of the doorway (you don't have to do it exactly the size of the doorway,but it would look more realisticly if you make it the size of the doorway)than on the left upper side of the screen click on the Models tab than select the door and click add model name it for example door than set the origin if you want the door to be swinging model set it in one of the dges of the door if you wanna make the door moving upwards downwards or sidways live it that way than animate the model,put a Door entity in he level and assosiate it with the Door model you made and animated.

thanks for the help