Revision control
++ <?xml version="1.0" ?>
++ <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0"
++ name="Pinball2" datamodel="ecmascript">
++ <state>
++ </state>
++ </scxml>
++ <?xml version="1.0" ?>
++ <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0"
++ name="Pinball2" datamodel="ecmascript">
++ <state>
++ </state>
++ </scxml>