The FORMAT record describes a number format in the workbook.
All the FORMAT records should appear together in a BIFF file. The order of FORMAT records in an existing BIFF file should not be changed. You can write custom number formats in a file, but they should be added at the end of the existing FORMAT records.
Record Data
|
Offset |
Name |
Size |
Contents |
|
4 |
ifmt |
2 |
Format index code (for internal use only) |
|
6 |
cch |
1 |
Length of the format string |
|
7 |
rgch |
var |
Number format string |
Microsoft Excel uses the ifmt field to identify built-in formats when it reads a file that was created by a different localized version. For more information about built-in formats, see "XF" on page 426.