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="Rockin&#039; All Over - Εμφανίσεις Νοεμβρίου-Δεκεμβρίου 2007" />
  </query-continue>
  <query>
    <pages>
      <page pageid="5840" ns="0" title="Release CD Θίασος Τρελλών">
        <revisions>
          <rev />
        </revisions>
      </page>
      <page pageid="5340" ns="0" title="Rex (nelos)">
        <revisions>
          <rev />
        </revisions>
      </page>
    </pages>
  </query>
  <warnings>
    <revisions xml:space="preserve">Unrecognized value for parameter 'rvprop': content&quot;</revisions>
  </warnings>
</api>