For BIFF8, an XCT record precedes a CRN record. The XCT and CRN records are grouped with their associated SUPBOOK record.
For BIFF7 and earlier, the XCT record stores the number of CRN records (type 5Ah) in the file. The CRN records immediately follow the XCT record.
Record Data—BIFF8
Offset
Name
Size
Contents
4
ccrn
2
Count of CRN records that follow
6
itab
2
Index (0-based) to sheet tab associated with the CRN record(s)