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Demonstration:
Groups
Drag new nodes/groups from the palette on the left onto the workspace. You can drag nodes directly into groups.
Collapse/expand groups with the -/+ buttons
Drag existing nodes into groups to add them.
Nodes can be dragged out of group 1 but not out of group 2
Click the 'Pencil' icon to enter 'select' mode, then select several nodes. Click the canvas to exit.
Click the 'Home' icon to zoom out and see all the nodes.

The source code for this application - and several others - is available on Github here. If you haven't got a license for the Toolkit, we offer 30 day evaluations.

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