in XAML, we can add nodes to Diagram.Nodes, we can add Buttons which appear as DiagramNodeAdapters, but what is the way to add a simple text that shows the activity of some area etc.

i added such a canvas element before the nodes, it shows nice in designer view of the XAML, but it is not shown in the diagram in runtime. I can access it under its name (ModeText) and change its .Text property too, so i assume it is somehow overlapped by the canvas of the diagram itself in Z-depth?

        <Canvas>
            <TextBlock  Name="ModeText" Canvas.Left="80" Canvas.Top="280"
                           Foreground="Plum" FontSize="42" Text="Browsing.." Width="180">
            </TextBlock>
        </Canvas> 

One could place it in grid simply below the diagram area, but now the question is nagging me from the technical side - how do you place labels within a diagram that can be moved around etc programmatically - labels that are not bound to links or nodes?

thx in advance, cheers