Revision control
++ <?xml version="1.0" encoding="UTF-8"?>
++ <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0" name="SubMachine">
++ <final id="topState"/>
++ </scxml>
++ <?xml version="1.0" encoding="UTF-8"?>
++ <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0" name="SubMachine">
++ <final id="topState"/>
++ </scxml>