Sketching a Spline

1. Select a tool that allows for a spline.

   For example, click Annotate tabDetail panel (Detail Line).

2. Click Place Lines tab (or respective Place <Element> tab or Create <Element> tab)Draw panel (Spline), and place the cursor in the drawing area.
3. Click to specify the start point for the spline.
4. Move the cursor and click to specify the next control point on the spline. Repeat as necessary.
5. Click (Modify) to complete the spline.

You cannot create a single closed loop with one spline. However, you can close the loop with a second spline. See Modifying a Spline.