2.2.2.8.1 BLOCKTRAILER

Unicode:

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
cb																wSig
dwCRC
bid
...

ANSI:

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
cb																wSig
bid
dwCRC

cb (2 bytes): The amount of data, in bytes, contained within the data section of the block. This value does not include the block trailer or any unused bytes that can exist after the end of the data and before the start of the block trailer.

wSig (2 bytes): Block signature. See section 5.5 for the algorithm to calculate the block signature.

dwCRC (4 bytes): 32-bit CRC of the cb bytes of raw data, see section 5.3 for the algorithm to calculate the CRC. Note the locations of the dwCRC and bid are differs between the Unicode and ANSI version of this structure.

bid (Unicode: 8 bytes; ANSI 4 bytes): The BID (section 2.2.2.2) of the data block.