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:
- graph(+URI)
- Only search for namespaces used in triples that belong to the
given named graph.
- namespaces(+List)
- 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
rdf and rdfs
are added to the provided List. If a namespace is not
declared, the resource is emitted in non-abreviated form.
