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The RDF API provides a number of theming functions for presenting metadata and RDF statements.
Property-value tables
Property-value tables are useful e.g. for displaying metadata.
An example of a use case is adding a Metadata tab to nodes, where the available RDF repositories are queried for any triples relating to the current node. This information is then displayed, sans the subject (the node), in a property-value table.
theme_rdf_property_table()
Triple tables
In an RDF-aware context for power users, triple tables may occasionally come useful. See a screenshot of what these tables look like.