Revision control
++ <?xml version="1.0"?>
++
++ <!-- define var1 with default value 0. Parent will invoke this process setting var1 = 1. Return event1 if var1 == 1, event0 otherwise -->
++ <scxml initial="s0" version="1.0" datamodel="ecmascript" xmlns="http://www.w3.org/2005/07/scxml" xmlns:conf="http://www.w3.org/2005/scxml-conformance">
++ <datamodel>
++ <data id="Var1" expr="0"/>
++ </datamodel>
++
++ <state id="s0">
++
++
++ <transition cond="Var1===1" target="final">
++ <send target="#_parent" event="event1"/>
++ </transition>
++
++ <transition target="final">
++ <send target="#_parent" event="event0"/>
++ </transition>
++
++ </state>
++
++ <final id="final"/>
++
++ </scxml>