When you create several free-form geometries on a secondary layer, you can change the order in which they are drawn, or layered in the scene. This affects the resulting image because a geometry with a higher priority has precedence over one with a lower priority. You can use the priority order to create complex colour effects involving multiple geometries.
To set the priority of a mask:



(a) Priority order buttons
| Click: | To move the geometry: |
|---|---|
| |
To the top layer. |
| |
To the bottom layer. |
| |
Down one layer. |
| |
Up one layer. |