Path Definition Tab

Path Definition tab from a scan that supports the Spline Path area

Only some scans support the Spline Path area. These include: Linear Open, Linear Closed, Patch, Section, and Freeform. On other scans, the Spline Path area does not appear.

The Path Definition tab in the scan dialog box (Insert | Scan) has, at most, two areas:

Theoretical Path and Spline Path

You can use these areas to generate a theoretical pathway for your scan and, on supported scans, you can fit the theoretical data points to a secondary path called a spline path. This essentially filters the number of theoretical points.

More:

Theoretical Path Area

Spline Path Area