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The Internet registry information service (IRIS) registers domain names while the domain name system (DNS) publishes domain addresses with mapping of names to addresses for the original Web. Analogously, the problem oriented registry of tags and labels (PORTAL) registers resource labels and tags while the domain ontology oriented resource system (DOORS) publishes resource locations and descriptions with mapping of labels to locations for the semantic Web. Both the IRIS-DNS system and the PORTAL-DOORS system share a common architectural style for pervasive metadata networks that operate as distributed metadata management systems with hierarchical authorities for entity registering and attribute publishing. Hierarchical control of metadata redistribution throughout the registry-directory networks constitutes an essential characteristic of this architectural style called hierarchically distributed mobile metadata (HDMM) with its focus on moving the metadata for who what where as fast as possible from servers in response to requests from clients.