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If this is used in 2.0, then it is 0 for SPORE. 36 Index entry count u32 Number of entries in the Index Table. 40 Offset of first Index entry < 2.0 u32 Location of first index entry 44 Index size u32 Size of the Index table, in bytes. 48 Hole entry count < 2.0 u32 Number of Hole entries in the Hole Record 52 Hole offset < 2.0 u32 Location of the hole Record 56 Hole size < 2.0 u32 Size of the hole Record 60 Index minor version < 2.0?