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Hello. My name is Michael. I can help you with your question.
The guides are on the left and right sides of the paper. When you put the paper in, it essentially prevents the paper from moving to one side or the other. They look like two rails, one on the left of the paper and one on the right. When you move them in or out, they should move together. You can push them all the way out to load or remove paper, but once you put the paper in, you should push them inward until they touch the sides of the paper. Does that answer your question? If not, or if you still have questions, please let me know.