System.Object
   Nevron.Nov.Dom.NNode
      Nevron.Nov.Dom.NDocumentNode
         Nevron.Nov.Dom.NElement
            Nevron.Nov.Dom.NVisual
               Nevron.Nov.UI.NInputElement
                  Nevron.Nov.UI.NBoxElement
                     Nevron.Nov.UI.NWidget
                        Nevron.Nov.UI.NContentHolder
                           Nevron.Nov.UI.NDocumentViewWithCommanding<TView>
                              Nevron.Nov.UI.NDocumentViewWithCommandBars<TView>
                                 Nevron.Nov.Office.Draw.Viewer.NViewerWidget
                        Nevron.Nov.UI.NInnerAdorners
                           Nevron.Nov.UI.NViewportBase
                              Nevron.Nov.UI.NDocumentView<TDoc,TDocContent,TDocFormat,TDocFormatRegistry,TDocLoadSettings,TDocSaveSettings>
                                 Nevron.Nov.Diagram.NDiagramView<TDoc,TDocContent,TDocFormat,TDocFormatRegistry,TDocLoadSettings,TDocSaveSettings>
                                    Nevron.Nov.Diagram.NDrawingView
                                       Nevron.Nov.Office.Draw.Viewer.NViewerDrawingView

Reference

Nevron.Nov.Diagram Assembly