To Add Points or Vertices
1. Select the spline and click 
, or double-click the spline in the Sketcher window. The Spline tab opens.
, or double-click the spline in the Sketcher window. The Spline tab opens.2. Right-click on a location on the spline. A shortcut menu appears.
3. Click Add Point.
 | You can extend a spline by clicking on an endpoint. |