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>
    <allimages gaifrom="Anthodite 3.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="570" ns="6" title="File:1930 Nicholson Signatures.jpg" />
      <page pageid="619" ns="6" title="File:1 Boxwork.jpg" />
      <page pageid="670" ns="6" title="File:2013 07 21 Black Crew.JPG" />
      <page pageid="672" ns="6" title="File:2013 07 21 Derek.JPG" />
      <page pageid="673" ns="6" title="File:2013 07 21 Dipluran.JPG" />
      <page pageid="674" ns="6" title="File:2013 07 21 Tammy.JPG" />
      <page pageid="477" ns="6" title="File:6 inch Rim vent.jpg" />
      <page pageid="766" ns="6" title="File:Actinomycetes.JPG" />
      <page pageid="584" ns="6" title="File:Anthodite.jpg" />
      <page pageid="710" ns="6" title="File:Anthodite 2.jpg" />
    </pages>
  </query>
</api>