The form is conveniently pre-populated with registered namespaces and a skeleton SPARQL update.
To make changes in the properties of the current resource, simply insert your SPARQL at the bottom of the form, then click the Update button.
Example: Add a dc:title property to the current resource:
INSERT {<> dc:title "My Title" .} WHERE { }
Example: Delete the inserted dc:title "My Title":
DELETE {<> dc:title "My Title" .} WHERE { }
Example (multiple statements): Insert dc:title "My Test Title" and then Delete dc:title "My Title":
INSERT {<> dc:title "My Test Title" .} WHERE { }; DELETE {<> dc:title "My Title" .} WHERE { }