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 rows
 0x04      0000 0100
...
           ||+------- 0x00
           |+-------- 0x00
           +--------- 0x00

## The rows
my @rows =  ( 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x04, 0x00 );
...
        }
    }
}