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>
    <pages>
      <page pageid="1" ns="0" title="Main Page">
        <revisions>
          <rev user="Marc" timestamp="2012-10-22T16:08:29Z" comment="/* Miscellaneous links */ Rollback test" />
          <rev user="Marc" timestamp="2012-10-22T16:07:19Z" comment="/* Miscellaneous links */ test changes without Bot" />
          <rev user="Marc" timestamp="2012-10-19T12:49:37Z" comment="/* Miscellaneous links */" />
          <rev user="Marc" timestamp="2012-10-19T12:48:31Z" comment="/* Miscellaneous links */ test change" />
          <rev user="Marc" timestamp="2012-10-19T12:47:02Z" comment="test changes" />
        </revisions>
      </page>
    </pages>
  </query>
  <query-continue>
    <revisions rvstartid="307" />
  </query-continue>
</api>