Different ways of estimating extents.
| Constant | Value | Description |
|---|---|---|
| esriExtentAnyOf | -1 | The any of all extents. |
| esriExtentFirstOf | 0 | The first of all extents. |
| esriExtentIntersectionOf | 1 | The intersection of all extents. |
| esriExtentUnionOf | 2 | The union of all extents. |
| esriExtentLastOf | 3 | The last of all extents. |