<its:rules xmlns:its="http://www.w3.org/2005/11/its" version="1.0">
 <its:termRule selector="//term" term="yes" termInfoPointer="id(@def)"/>
 <its:termRule selector="//*[@syn]" term="yes" termInfoRefPointer="@syn"/>
 <its:termRule selector="//dt[../dd]" term="yes" termInfoPointer="../dd"/>
</its:rules>