W3C:

2008-05-16: The Voice Browser Working Group has published an updated Working Draft of State Chart XML (SCXML): State Machine Notation for Control Abstraction. SCXML is an execution environment based on UML Harel State Tables and CCXML. The main differences from the previous draft are (1) the modularization of the language, (2) the introduction of profiles and (3) a revision of the algorithm for document interpretation; the document as a whole has changed significantly and the group welcomes review. Learn more about the Voice Browser Activity. (Permalink)