Fwd: [oasis-tcs/dita] Is the "Example: Key definition with key reference" page correct? (#348)

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE map PUBLIC "-//OASIS//DTD DITA Map//EN" "map.dtd">
<map>
  <topicref keyref="widget"/>
  <topicref keys="widget" href="http://test1" keyref="mainProduct" scope="external">
    <topicmeta><navtitle>Information about Widget</navtitle></topicmeta>
  </topicref>
  <topicref keys="mainProduct" href="http://test2" scope="external">
  </topicref>
</map>