http://www.w3.org/ns/prov#value | - The method of claim 76 wherein a menu associated with an icon lists functions having as domain the class, an instance of which is represented by the icon, wherein a function is a binary relation that accepts as input an instance of a first class, referred to as the domain of the function, and produces as output a corresponding instance of a second class, referred to as the co-domain of the functio
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