C:\>perl test.pl
                Zero :    0 => 00000000
             Or-ed 1 :    1 => 00000001
             shift 1 :    2 => 00000010
             Or-ed 0 :    2 => 00000010
             shift 1 :    4 => 00000100
             Or-ed 1 :    5 => 00000101
             shift 1 :   10 => 00001010
             Or-ed 0 :   10 => 00001010