Here is a list of all enums with links to the classes they belong to:

### - o -

- Opcode : osg::LogicOp
- OperandParam : osg::TexEnvCombine
- Operation : osg::Stencil, osg::StencilTwoSided
- OptimizationOptions : osgUtil::Optimizer
- Options : osg::CopyOp, osgUtil::SceneView
- Orientation : osgSim::ScalarBar
- Origin : osg::ClipControl, osg::Image
- OSXMenubarBehavior : osg::DisplaySettings
- OverlayTechnique : osgSim::OverlayNode