<metadata name="date" brief="yes" sortkey="numeric" type="year" merge="range"
termlist="yes"/>
<metadata name="author" brief="yes" termlist="yes" merge="longest"
- frank="au 3" rank="2" mergekey="optional" />
+ rank="2 au 3" mergekey="optional" /> <!-- rank="2 au 3" -->
<metadata name="subject" brief="yes" merge="unique" termlist="yes" rank="3"/>
<metadata name="id"/>
<metadata name="lccn" merge="unique"/>