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Right now, all the instances, binds, submissions, and actions of a model are aggregated into a single, monolithic asset.  There is no language support to allow authors to decompose the model into logical parts.

It would help to be able to compose a model by nesting more models within it.  

The instances of nested models could be made visible to containing models.

[[Example markup for nested models]]

[[Category:XFormsFutureFeatures]]