"Index (publishing)" . "Hypertext" . . "Social movements" . "Identifiers" . "World Wide Web" . "Library cataloging and classification" . "Museology" . "Open access journals" . "Free culture movement" . "Metadata" . "Open access (publishing)" . "Archival science" . . "Academic publishing" . "Graphical control elements" . "Electronic publishing" . "Scholarly communication" . "Baseball-related lists" .