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="Binary trading 2496.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="65" ns="6" title="File:100 1155.JPG" />
      <page pageid="158" ns="6" title="File:131008 AN.zip" />
      <page pageid="172" ns="6" title="File:27127config.gz" />
      <page pageid="137" ns="6" title="File:Atmega88-fuses.png" />
      <page pageid="138" ns="6" title="File:Atmega88-locks.png" />
      <page pageid="139" ns="6" title="File:Atmega88-signature.png" />
      <page pageid="63" ns="6" title="File:Backside JP 1.jpg" />
      <page pageid="98" ns="6" title="File:Beta rom img.zip" />
      <page pageid="68" ns="6" title="File:BGA JTAG TRACES.jpg" />
      <page pageid="67" ns="6" title="File:BGA TEST TRACES.jpg" />
    </pages>
  </query>
</api>