Extracts the curve from a surface’s boundary.
Name the curve in Curve name field.
Select the surface in the drop down list box or click and select the source surface with the mouse.
Set the radio button for the desired boundary. The selected boundary is highlighted in the display. You can also click and use the mouse to pick the boundary explicitly.
Click Finish (or OK if you’re not using the wizard) to create the curve.
More about curves and surface boundaries.