5. A method as in claim 4 , wherein said formatted information includes one or more markup language schema definitions; and including steps of describing context information using selection of one or more attributes to which values can be assigned, using inclusion of those attributes in the formatting information, and using association of selected values in the formatting information for those attributes.
5. A method as in claim 4 , wherein said formatted information includes one or more markup language schema definitions; and including steps of describing context information using selection of one or more attributes to which values can be assigned, using inclusion of those attributes in the formatting information, and using association of selected values in the formatting information for those attributes. 6. A method as in claim 5 , wherein said searchable context information includes values to be assigned to said attributes; and including steps of associating said searchable context information with second context information, said second context information being supplied by an entity other than said supplier of said one context information.