State Chart XML (SCXML) is currently a Working Draft published by the World Wide Web Consortium (W3C). SCXML provides a generic state-machine based execution environment based on Harel State Tables. SCXML is a candidate for the control language within multiple markup languages coming out of the W3C (see Working Draft for details). Commons SCXML is an implementation aimed at creating and maintaining a Java SCXML engine capable of executing a state machine defined using a SCXML document, while abstracting out the environment interfaces.
E. Sekerinski, and R. Zurob. &\#171;UML&\#187; '01: Proceedings of the 4th International Conference on The Unified Modeling Language, Modeling Languages, Concepts, and Tools, page 376--390. London, UK, Springer-Verlag, (2001)