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Metal Gear Solid Hints
Where do I go after getting the PAL key?
1 of 5: You need to go all the way back to the control room. This is annoying to have to do, but you'll be making a few runs up and down the base.
2 of 5: Be careful while you are inside the control room, as if you are seen by a surveillance camera, the door will lock and there is no escape. The room will then fill with gas and you will die.
3 of 5: Insert the key into the first computer, and watch the cut scene.
4 of 5: You need to cool the key, and heat it to use it in the other terminals.