Add curve to toolpath dialog

In this dialog, you can add a new curve to the toolpath.  Select the curve from the drop down list or use the Pick curve   button to select it graphically.  Use the reverse curve checkbox to change the direction of the curve.  A curve is added to a toolpath in one of three ways.

1. As a replacement for the entire path.

2. Added before the selected point

3. Added after the selected point