Vertex
 | 
| Member name | Value | Description | 
|---|---|---|
| SimpleVertex | 0 | Standard vertex. | 
| SplineControlVertex | 1 | Spline-fit or curve-fit control point. | 
| SplineFitVertex | 2 | Spline-fit generated vertex. | 
| CurveFitVertex | 3 | Curve-fit generated vertex. | 
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