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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
 (TXT)  read paper