| Point-Point Topology | PP | Point-Point Topology | Integer |
| Connection-Point Topology | CP | Connection-Point Topology | Integer |
| Edge Type | T | Edge Type:
0: Utmost (with no adjacent region)
1: Exterior (with just one adjacent region on one side)
2: Interior (between to region) | Integer |
| Region Topology ( by points index) | RP | Region Topology ( by points index) | Integer |
| Region-Connection Topology | RC | Region-Connection Topology | Integer |
| Edge-Region Topology | CR | Edge-Region Topology | Integer |
| Connection-Connection Topology | CC | Connection-Connection Topology | Integer |
| Region-Region Topology | RR | Region-Region Topology | Integer |