Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 123]

▼NGraphModel
CBaseInputOutputNode	Common base class for GraphInput/OutputNodes
CConnection	!! Start in Graph.h for high level GraphModel documentation !!!
CDataType
CGraph
CGraphContext	!! Start in Graph.h for high level GraphModel documentation !!!
CGraphElement	!! Start in Graph.h for high level GraphModel documentation !!!
CGraphInputNode	Provides a node that serves as a data input into a node graph
CGraphModelSystemComponent
CGraphOutputNode	Provides an node that serves as a data output from a node graph
CModuleGraphManager
CModuleNode
▼CNode
CSortSlotsBySubId
CSlot	!! Start in Graph.h for high level GraphModel documentation !!!
CSlotDefinition
CSlotId
▼NGraphModelIntegration
CBooleanDataInterface	Satisfies GraphCanvas API requirements for showing bool property widgets in nodes
CCommentNodePaletteTreeItem
CCreateCommentNodeMimeEvent
CCreateGraphCanvasNodeMimeEvent	Provides a common interface for instantiating Graph Canvas support nodes like comments through the Node Palette
CCreateInputOutputNodeMimeEvent
CCreateModuleNodeMimeEvent
CCreateNodeGroupNodeMimeEvent
CCreateStandardNodeMimeEvent
CEditorMainWindow
CFloatDataInterface	Satisfies GraphCanvas API requirements for showing float property widgets in nodes
CGraphCanvasMetadata
CGraphCanvasSelectionData	Structure used to serialize the selection state for nodes and constructs so that it can be restored when loading and undoing operations
CGraphController	This is the main class for binding the node graph data to the UI provided by Graph Canvas
CGraphControllerManager	This is the main class for managing the Graph Controllers for Graph Canvas scenes
CGraphControllerNotifications
CGraphControllerRequests
CGraphManagerRequests
CGraphModelSerialization
CHelpers
CInputOutputNodePaletteItem	Provides a common interface for instantiating InputGraphNode and OutputGraphNode through the Node Palette
CIntegerDataInterface	Satisfies GraphCanvas API requirements for showing int property widgets in nodes
CIntegrationBusInterface	Bus functions that allow the GraphModel Integration system to callback to the client system
CModuleNodePaletteItem
CNodeGroupNodePaletteTreeItem
CReadOnlyDataInterface	Satisfies GraphCanvas API requirements for showing read only property widgets in nodes
CStandardNodePaletteItem	Provides a common interface for instantiating GraphModel::Node subclasses through the Node Palette
CStringDataInterface	Satisfies GraphCanvas API requirements for showing string property widgets in nodes
CThumbnailImageItem
CThumbnailItem
CVectorDataInterface