| Offset | Name | Size | Contents |
| 4 | (reserved) | 16 | Reserved; must be zero |
| 20 | grbit | 2 | Format flags |
| 22 | icrt | 2 | Drawing order (0 = bottom of the z-order) |
| Offset | Bits | Mask | Name | Contents |
| 0 | 0 | 01h | fVaried | Vary color for each data point |
| 0 | 7–1 | FEh | (reserved) | Reserved; must be zero |
| 1 | 7–0 | FFh | (reserved) | Reserved; must be zero |