<its:rules xmlns:its="http://www.w3.org/2005/11/its" xmlns:h="http://www.w3.org/1999/xhtml"  version="2.0">
  <its:idValueRule selector="//h:p" idValue="@id"/>
   <its:idValueRule selector="//h:b" idValue="@id"/>
  <its:idValueRule selector="//h:var" idValue="@id"/>
</its:rules>