Spline
Draw the Spline Line to the 3D Sketch.
- On the  tab, in the Lines group, click tab, in the Lines group, click Spline. Spline.
- Click the spline line points.If you select to the first line end point some other line end point, the tangential quide curve is drawn. 
- Select Confirm.
Note: 
  - You can set the tangency off by the button.Set the tangential on or off by clicking the minimenu tangent button.  
