To Create a 3D Curve Through Points
1. Click > 
Curve through Points on the Import DataDoctor ribbon tab. The Curve Through Points dialog box opens and the Points collector becomes active.
Curve through Points on the Import DataDoctor ribbon tab. The Curve Through Points dialog box opens and the Points collector becomes active.2. Select the references in the graphics window such as points, vertex, curve end, or surface point to define the curve. The selected entities appear in the Points collector in the Curve Through Points dialog box.
 | Hold down the CTRL key to select more than one reference point. |
3. Click OK in the Curve Through Points dialog box to create the curve. The curve passes through all the selected entities and appears in the graphics window. A new datum node is created on the GTS Tree.