If the host requires additional information above and beyond the data elements specified in the schema, it SHOULD use Data Forms as described in the Extensibility section of this document.
+If the host requires additional information above and beyond the data elements specified in the schema, it SHOULD use Data Forms as described in the Extensibility section of this document. (The next three examples show registration of an existing account with a third-party service, not of an entity with a server for the purpose of account registration.)