Flags that toggle which brush controls are displayed when calling [IOnInspectorGUI.ShowBrushesGUI].
| Select | Display the brush selection control. |
| Inspect | Display the brush inspector for the currently selected brush. |
| Opacity | Display the brush opacity control. |
| SelectAndInspect | Display the brush selection control, and the brush inspector for the currently selected brush. |
| All | Display all brush controls. |