The form is conveniently pre-populated with registered namespaces and a skeleton SPARQL query.
To add a new property to the current object or update existing properties, simply move to the bottom of the form and type in the SPARQL, then click the Update button.
Add a dc:title property to the current object or datastream:
INSERT {<> dc:title "My Title" .} DELETE {} WHERE { }
Delete the inserted dc:title "My Title":
INSERT { } DELETE {<> dc:title "My Title" .} WHERE { }
Update the inserted dc:title "My Title" to "My Test Title":
INSERT {<> dc:title "My Test Title" .} WHERE { }; DELETE {<> dc:title "My Title" .} WHERE { }