1  SAX.setDocumentLocator()
2  SAX.startDocument()
3  SAX.internalSubset(doc, , )
4  SAX.elementDecl(doc, 3, ...)
5  SAX.attributeDecl(doc, val, 1, 3, NULL, ...)
6  SAX.externalSubset(doc, , )
7  SAX.startElement(doc, val='v1')
8  SAX.endElement(doc)
9  SAX.endDocument()