In the same way as defining the structure of a license
agreement, the above definition for the other domain concepts
can also be easily expanded to accommodate new
items, or refined to adapt to other situations and meet different
criteria. The definition is then expressed in OWL/RDF,
making the license agreement and other domain concepts
part of the ontology that makes up the SmArt Knowledge
Core (SKC). The use of OWL/RDF based ontology also facilitates
the extensibility of agreement definitions and other
concept definitions.