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read( FH , $lines, 4 ); # Read 32 bits (4 Bytes) and store the data in
+ $lines Size (4 Bytes Size).

     ( $lines_1, $lines_2, $lines_3, $lines_4 ) = unpack ( "I I I I" ,
+ $lines ); # (I) An unsigned integer.

read( FH , $lines, 16 ); # Read 4x 32 bits (4 Bytes) and store the dat
+a in $lines Size (16 Bytes Size).
     ( $lines_1, $lines_2, $lines_3, $lines_4 ) = unpack ( "I I I I" ,
+ $lines ); # (I I I I ) FOUR unsigned integer(S).