As the parser recognizes parts of the RDF document then any handlers registered for that type of an event are called with suitable parameters. This is called just before the parsing of the document starts. This is called just after parsing has finished, but only if no errors occurred during the parse. Parse returns what this returns. This event is generated when a new RDF statement has been generated by the parseer.start tag is recognized.
Element is the name of the XML element type that is opened with the start tag.
The non-markup sequence of characters is in String. This handler should return the processed text as a string.