SAX.setDocumentLocator() SAX.startDocument() SAX.internalSubset(doc, , ) SAX.elementDecl(doc, 3, ...) SAX.elementDecl(a, 3, ...) SAX.elementDecl(b, 3, ...) SAX.externalSubset(doc, , ) SAX.startElement(doc) SAX.startElement(a) SAX.characters(This, 4) SAX.endElement(a) SAX.characters( is a , 6) SAX.startElement(b) SAX.characters(valid, 5) SAX.endElement(b) SAX.characters( document, 9) SAX.endElement(doc) SAX.endDocument()