Metadata manifest files have the file name manifest.rdf. The metadata manifest file for a document shall be stored in the root of the package. The metadata file for a subdocument shall be stored in the sub document's directory.Metadata manifest files enumerate metadata files and their relationships to other files in that documents or subdocuments . The relationships are expressed in the manifest metadata files using RDF and OWL.
In addition to metadata files, the manifest.rdf file may list other files which are contained in the document or subdocument that contain RDFa metadata. The 'manifest.rdf' file need not exist if a document or subdocument does not contain my files that contain RDF metadata.