Revision control
++ <?xml version="1.0" ?>
++ <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0">
++ <state id="workflow">
++ <transition event="updateLights">
++ |if cond="In('lightImpulseOn')">
++ <raise event="dings"/>
++ <else/>
++ <raise event="turnOffGameOver"/>
++ </if>
++ </transition>
++ </state>
++ </scxml>