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Portal 2 Hints
Okay, now how can I get the door to stay open?
1 of 7: You'll have to put something heavy on the door-opening button so you can be free to go through the door.
2 of 7: Didn't you notice something large falling to the floor from an overhead tube when you entered the chamber?
3 of 7: Go check out the big cube.
4 of 7: You can pick it up with the "Use Item" key.
5 of 7: You can then carry it around before dropping it with the same key.
6 of 7: So carry it over to the door-opening button and drop it so that it lands on the button.
7 of 7: Now you can leave the chamber through the door. (Well, the left half of it, anyway.)
