Re: Merging two documents

or what, exactly? "Merge" can mean a dozen different things.

file1.xml
<root>
  <section1>
    <elem>
      <name>1</name>
      <some-stuff>true</some-stuff>
      <other-stuff>
        <nested>true</nested>
      </other-stuff>
    </elem>
  </section1>
</root>

file2.xml
<root>
  <section1>
    <elem>
      <name>3</name>
      <some-stuff>false</some-stuff>
    </elem>
  </section1>
</root>

<root>
  <section1>
    <!-- all "elem"s from file1 -->
    <elem>
      <name>1</name>
      <some-stuff>true</some-stuff>
      <other-stuff>
        <nested>true</nested>
      </other-stuff>
    </elem>

    <!-- all "elem"s from file2 -->
    <elem>
      <name>3</name>
      <some-stuff>false</some-stuff>
    </elem>

  </section1>
</root>