Enum values
| Name | Value | Description |
|---|---|---|
| Promote | 0 | The current selection is to be replaced with the new selection. |
| Include | 1 | The current selection is to grown to include the new selection. |
| Exclude | 2 | The current selection is to shrink to exclude the new selection. |
| Inverse | 3 | The current selection is to be exclusive-ored with the new selection. |