- <metadata name="author" brief="yes" termlist="yes" merge="longest" rank="2"/>
- <metadata name="subject" merge="unique" termlist="yes" rank="3"/>
+ <metadata name="author" brief="yes" termlist="yes" merge="longest"
+ rank="2 au 3" mergekey="optional" /> <!-- rank="2 au 3" -->
+ <metadata name="subject" brief="yes" merge="unique" termlist="yes" rank="3"/>