Here is a list of all documented class members with links to the class documentation for each member:

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• ObjectValidity() : PolyObject
• ObjHasDependents() : ObjectState
• OKGizmo() : SpecialFX
• OKToBindToNode() : Control
• OKToChangeTopology() : BaseObject
• OnNotify() : AbstractNotificationHandler
• Open() : FileManager , PolyLine , RenderExecute , SchematicViews , TrackView
• OpenDialog() : Effects , RenderSettings
• OpenGroup() : INode
• OpenMtlDlg() : MaterialEditor
• OpenOutput() : Bitmap
• Optimize() : Mesh
• OptimizeSmoothingGroups() : MNMesh
• OrderVert() : MNMesh
• OrderVerts() : MNMesh
• OrFlags() : FlagUser
• Orthogonalize() : Matrix3
• OSClearFlag() : ObjectState
• OSCopyFlag() : ObjectState
• OSSetFlag() : ObjectState
• OSTestFlag() : ObjectState
• OtherFace() : MNEdge
• OtherVert() : MNEdge
• OutToTri() : MNMesh
• OverrideLanguageSpecifiedInSceneFile() : PreferencesFileEncoding
• OverrideNodeProperties() : ContainerObject