BOF, Offset=92:'DOCUMENT' followed by either 0x01 (Start of Header) or 0x02 (Start of Text) followed by a fixed gap of 4 followed by either 0x00000000 (4 x Null) or 0x01000000 (Start of Header followed by 3 x Null) or 0x00000001 (3 x Null followed by Start of Header)