- <metadata name="snippet" brief="yes" merge="longest"/>
- <metadata name="electronic-url"/>
- <metadata name="electronic-text"/>
+ <metadata name="snippet" brief="yes" merge="unique"/>
+ <metadata name="electronic-url" brief="yes" merge="no"/>
+ <metadata name="electronic-format-type" />
+ <metadata name="electronic-format-instruction" />
+ <metadata name="electronic-url" brief="yes" merge="no"/>
+ <metadata name="electronic-text" brief="yes" merge="no"/>