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• OBJECT_COORDS : osgText::TextBase
• OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT : osgText::TextBase
• OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY : osgSim::OverlayNode
• OBJECT_LINEAR : osg::TexGen
• OFF : osg::Material , osg::StateAttribute
• ON : osg::StateAttribute
• ON_DEMAND : osgViewer::ViewerBase
• ONCE : osgAnimation::Animation
• ONCE_PER_ATTRIBUTE : osg::State
• ONCE_PER_FRAME : osg::State
• ONE : osg::BlendFunc
• ONE_MINUS_CONSTANT_ALPHA : osg::BlendFunc
• ONE_MINUS_CONSTANT_COLOR : osg::BlendFunc
• ONE_MINUS_DST_ALPHA : osg::BlendFunc
• ONE_MINUS_DST_COLOR : osg::BlendFunc
• ONE_MINUS_SRC_ALPHA : osg::BlendFunc , osg::TexEnvCombine
• ONE_MINUS_SRC_COLOR : osg::BlendFunc , osg::TexEnvCombine
• OPAQUE_BIN : osg::StateSet
• OPEN_BRACKET : osgDB::Field
• OPTIMIZE_TEXTURE_SETTINGS : osgUtil::Optimizer
• OR : osg::LogicOp
• OR_INVERTED : osg::LogicOp
• OR_REVERSE : osg::LogicOp
• ORTHOGRAPHIC_SHADOW_MAP : osgShadow::ShadowSettings
• OSGNV_PARAMETER_BLOCK : osg::StateAttribute
• OSGNVCG_PROGRAM : osg::StateAttribute
• OSGNVEXT_REGISTER_COMBINERS : osg::StateAttribute
• OSGNVEXT_TEXTURE_SHADER : osg::StateAttribute
• OSGNVEXT_VERTEX_PROGRAM : osg::StateAttribute
• OSGNVPARSE_PROGRAM_PARSER : osg::StateAttribute
• OSGNVSLANG_PROGRAM : osg::StateAttribute
• OUTLINE : osgText::Text
• OVERALL : osgText::Text
• OVERRIDE : osg::StateAttribute
• OVERRIDE_PROTECTED_RENDERBIN_DETAILS : osg::StateSet
• OVERRIDE_RENDERBIN_DETAILS : osg::StateSet
• OVERWRITE : osgViewer::ScreenCaptureHandler::WriteToFile