The subject of aboutness is very much related to that of “relevance” -- i.e., the relationship between a document and an information need or between a document and a statement of information need (a query). The subject of relevance/pertinence has generated a great deal of debate and literature. A very complete overview can be found in Mizzaro (1998). Hjørland (2000) points out that relevance is dependent on the theoretical assumptions that guide the behavior of the person seeking information.