RDFa Support
From RuntimeWiki
RDFa (or Resource Description Framework - in - attributes) is a W3C Recommendation that adds a set of attribute level extensions to HTML for embedding rich metadata within Web documents. The RDF data model mapping enables its use for embedding RDF triples within HTML documents, it also enables the extraction of RDF model triples by compliant user agents.
Here is the spec for RDFa: http://www.w3.org/TR/xhtml-rdfa-primer/
