| Name | Value | Description |
|---|---|---|
| None | 0 | No merging. |
| Cells | 1 | Merge scrollable cells. |
| ColumnHeaders | 2 | Merge column headers. |
| RowHeaders | 4 | Merge row headers. |
| AllHeaders | ColumnHeaders | RowHeaders | Merge column and row headers. |
| All | Cells | AllHeaders | Merge all areas. |
Specifies constants that define which areas of the grid support cell merging.