Barriers
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 | “I can't get over how small you are!” This article is a stub. As such, it is not complete. You can help Portal wiki by expanding it. |
Barriers are solid objects that prevent the player and objects from going through. There are two types of Barriers. Glass, and Grating. Glass does not allow portals and paint to pass through it, meanwhile, Grating allows portals and paint to pass through. In the Portal 2 Puzzle Creator, Barriers are called Glass, and can be changed to Grating.