Types of extend diagram operation.
| Constant | Value | Description |
|---|---|---|
| esriDiagramExtendByConnectivity | 1 | Extend by connectivity. |
| esriDiagramExtendByTraversability | 2 | Extend by traversability. |
| esriDiagramExtendByAttachment | 3 | Extend by attachment. |
| esriDiagramExtendByContainment | 4 | Extend by containment. |