The BOF record marks the beginning of the workbook in the BIFF file. It also marks the beginning of record groups for sheets in the workbook. The record data has the following format.
Offset |
Name |
Size |
Contents |
0 | vers | 2 | Version number |
2 | dt | 2 | Substream type |
0005h = Workbook Globals
0010h = Worksheet