Thanks Sean, Benjamin and I. Savant for your responses so far,

>You could use the various setMetadata: methods of NSPersistentStore
and NSPersistentStoreCoordinator.
I thought metadata was meant to make stores searchable with spotlight? Is
this the correct usage? I claim ignorance here :)

>You could have a NodeViewState, joined to the Node by a relationship, for
each node to store the view-only parameters.

This is true, but then I have to include extra entities within the data
model that have nothing to do with the graph itself but only with the View.

>IF PERSISTED

Yes, I'd like to save this document with a specific layout and open it.

>What's your aversion to storing this within the nodes themselves? If
>they're meant to be persisted at all, and these properties belong to
>your Node instances, then there's no obvious reason (from your
>description) to create a separate entity to store them. What's the
>problem? Be specific.
Well, perhaps I didn't explain it well enough. Let's say, in the future I
want to have a different View. In that case specific location X and Y for
this view will mean different things or may not be required at all. Perhaps
other View will not need background color or border info, etc. Within my
model objects I just want to store model related information, nothing that
pertains to a particular view. Nevertheless I would like to store whatever
view information I have with the document so when I open it that view is
back to the state user left it at.
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