Nodes that can exist in the context of different node editor types.
Because of that it should also be possible to paste them from the clipboard regardless of the node editor. That is one step into the direction of unifying the node workflow for different editor types.
There are two issues that need to be resolved:
- nodes that don't exist where they are pasted
- nodegroups have a node-tree type attached to them
Eventually it would be nice to unify the node tree types in a more generic way.
For now these can just be solved by notifying the user that there are incompatible nodes in the clipboard with an error message.