. . "A related resource that is required by the described resource to support its function, delivery, or coherence."@en-us . "This term is intended to be used with non-literal values as defined in the DCMI Abstract Model (http://dublincore.org/documents/abstract-model/). As of December 2007, the DCMI Usage Board is seeking a way to express this intention with a formal range declaration."@en-us . "Requires"@en-us .