Type of rules.
| Constant | Value | Description | 
|---|---|---|
| esriUNRTJunctionJunctionConnectivity | 1 | Connectivity rule between junction and junction. | 
| esriUNRTContainment | 2 | Containment rule. | 
| esriUNRTAttachment | 3 | Attachment association. | 
| esriUNRTJunctionEdgeConnectivity | 4 | Connectivity rule between junction and edge. | 
| esriUNRTEdgeJunctionEdgeConnectivity | 5 | Connectivity rule between edge/junction/edge. |