- o -

• ObjectName : Mezzanine::WorldObject
• Offset : Mezzanine::XML::ParseResult , Mezzanine::XML::XPathParseResult
• OgreBeenInitialized : Mezzanine::Graphics::GraphicsManager
• OgreManager : Mezzanine::Graphics::SceneManagerData
• OgreResource : Mezzanine::ResourceManager
• OgreViewport : Mezzanine::Graphics::Viewport
• OgreWindow : Mezzanine::Graphics::GameWindow
• OldScrollerValue : Mezzanine::UI::ScrollbarValueChangedArguments
• OperationsPaused : Mezzanine::WorldManager
• OptionalFile : Mezzanine::ObjectSettingGroup
• Orientation : Mezzanine::UI::Screen
• Origin : Mezzanine::Ray
• OverlappingObjects : Mezzanine::AreaEffect