Button Room and Beyond

Nested hint: How do I get to the Button Room?
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Nested hint: All I see here is a short hallway with a mirror at one end!
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Nested hint: I'm trapped in a mirror and I can't get out!
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Nested hint: How can I get past the Guardians of Zork?
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Nested hint: How can I get through the locked door at the end of the hallway?
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Nested hint: So what is this final test that I'm supposed to pass?
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