On the Lead tab of the Profiling, Pencil Mill and Flat Land Finishing (on finish pass only) cycles you can specify an extension distance for the start and end of the profile (for open profiles only). This helps avoid leaving small marks on the component. The open toolpath will be extended tangentially by the distance specified.
The extensions will be gouge checked and removed if they are found to gouge the component. Typically the extensions are not suitable in concave regions of the model.