<configure
    xmlns="http://namespaces.zope.org/zope"
    i18n_domain="zope.globalrequest">

  <subscriber
      handler=".subscribers.set"
      for="zope.traversing.interfaces.IContainmentRoot
           zope.traversing.interfaces.IBeforeTraverseEvent"
      trusted="y" />

  <subscriber
      handler=".subscribers.clear"
      for="zope.publisher.interfaces.IEndRequestEvent"
      trusted="y" />

</configure>
