Link Type - Selects the rate to move the tool at between drives. This can be at the Rapid or Feed rate.
Corner Type - Select either a Round or Sharp corner offset. The default is Round. If you select Sharp, the tool leaves the work to maintain a sharp-cornered toolpath.
Tolerance - Specifies the interpolation tolerance for any curves. Any selected curves in the plane of the active CPL are automatically broken down into line and arc segments for machining purposes. The tolerance value is the maximum distance these segments may deviate from the original curve.
Select by Region - Check to allow start/end points to be specified. These are accessed using the right hand mouse button to cycle through defining a new start point or a new end point.