Revision control
++ <ns0:scxml
++ datamodel="ecmascript"
++ xmlns:ns0="http://www.w3.org/2005/07/scxml" version="1.0" name="root">
++ <ns0:state id="A">
++ <ns0:onentry>
++ <ns0:log expr=""entering A""/>
++ </ns0:onentry>
++ <ns0:onexit>
++ <ns0:log expr=""exiting A""/>
++ </ns0:onexit>
++ <ns0:transition target="B" event="e1">
++ <ns0:log expr=""doing A->B transition""/>
++ </ns0:transition>
++ </ns0:state>
++ <ns0:state id="B">
++ <ns0:transition target="A" event="e2"/>
++ </ns0:state>
++ </ns0:scxml>