The desktop doc says:
ArcGIS applications work on Tablet PC devices, and all extensions to the ArcGIS architecture will work ....
... let you add digital ink on top of your map ...
However, I can't find any mention of Ink Layers in .NET Runtime SDK.
How do I add an Ink Layer to a Map?
Can I put an InkCanvas in a graphicsoverlay?
Any plans to support something like the ArcObjects InkGraphic ?