Changes

Additional MAR file sections may defined in the future. These sections must follow directly after the SIGNATURES section. A 4 byte  Each additional block separator must be added before each additional section with each byte being equal to in the following format:  4 bytes: Block separator {0, 0, 0, 0} (To disambiguate from the INDEX block) 4 bytes: Block identifier 4 bytes: Block size (Z) Z bytes: The rest of the block. This  The block separator is so the MAR reader code knows whether it is reading an additional block of or if it is reading the INDEX.IndexSize. The Block identifier is a value used to uniquely identify additional blocks so that they may be optionally added in any order.