The application model expresses a navigational view over the conceptual model. It describes the hypermedia aspects.
Slices are meaningful presentation units, drawn like pizza slices. They are associated to concepts from the conceptual model and contain properties and attributes, and possibly other slices.
Slices are linked together through slice relationships. There are aggregation relationships like index, tour, indexed guided tour etc., and reference relationships like links with a specified anchor.
In Hera the application model is encoded in RDF(S)