Regions: Kinds
There are three kinds of regions that can be created in LightZone. Each kind is useful in certain situations.
 | The Polygon region button creates a region having straight lines connecting the control points. |
 | The Bézier region button creates a region having curved lines connecting the control points. Moving a control point may affect the overall shape of the region. |
 | The Spline region button creates a region much like a Bézier, yet the region boundary is defined inside the control points. Moving a control point only locally affects the shape of the region. |