URI: 

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        Hyper Cube =
        ============
        
        You are crawling along the edge with caution.
        If you slip, you will be lost in HYPERSPACE forever.
        At last you reach the next vertex.
        On the wall you see a paper. 
        You can go
   DIR  high
   DIR  up
   DIR  left
   DIR  backward
  TEXT  read paper