Save XML document header, doctype and open the RDF environment. This
predicate also sets up the namespace notation.
Save an RDF header, with the XML header, DOCTYPE, ENTITY and opening
the rdf:RDF element with appropriate namespace declarations. It uses the
primitives from section 3.5 to generate the required namespaces and
desired short-name. Options is one of:
- Only search for namespaces used in triples that belong to the given
- Where List is a list of namespace abbreviations. With this
option, the expensive search for all namespaces that may be used by your
data is omitted. The namespaces
are added to the provided List. If a namespace is not
declared, the resource is emitted in non-abreviated form.