- o -

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