<?xml version="1.0"?> <bindings xmlns="http://www.mozilla.org/xbl" xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <binding id="outer"> <content> <xul:inner> <xul:label value="Before"/> <children/> <xul:label value="After"/> </xul:inner> </content> </binding> <binding id="inner"> <content> <children/> </content> </binding> </bindings>