SAX2 Options and XPDL

An Imperfect Fit

Built for Existing Parser Models SAX2's core properties and features reflect existing XML 1.0 practice. The options for including general entities and the external DTD subset (finally) address some of the reliability issues, but SAX2 doesn't provide any means of separating different types of processing.
Extensibility Saves the Day SAX2 does, however, allow for the development of extra features. XPDL will define SAX2 properties and features to meet its needs in addition to a core DTD. Hopefully, DOM-oriented parser developers will pick up on SAX2 as well.