You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information.
<?xml version="1.0"?>
<api>
  <query-continue>
    <allpages gapfrom="Re-discovered Classics for Piano (Henderson, Archibald Martin)" />
  </query-continue>
  <query>
    <pages>
      <page pageid="816095" ns="0" title="Re-Imagining Silent Night (Nichifor, Serban)">
        <revisions>
          <rev />
        </revisions>
      </page>
      <page pageid="531900" ns="0" title="Re-Invention, Op.35 (Atwell, Bob)">
        <revisions>
          <rev />
        </revisions>
      </page>
    </pages>
  </query>
  <warnings>
    <revisions xml:space="preserve">Unrecognized value for parameter 'rvprop': content&quot;</revisions>
  </warnings>
</api>