You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaicontinue="Cd1.gif" />
  </query-continue>
  <query>
    <pages>
      <page pageid="18" ns="6" title="File:041.jpg" />
      <page pageid="76" ns="6" title="File:2009 TT LMU class.JPG Teacher Training" />
      <page pageid="75" ns="6" title="File:2009 TT Participants 2.JPG" />
      <page pageid="78" ns="6" title="File:2010 TT LMU.jpg" />
      <page pageid="77" ns="6" title="File:BarryWadsworth 20100629 103111 JPG.jpeg" />
      <page pageid="89" ns="6" title="File:Basic Tenets of Patanjala Yoga Ramaswami.cover-v2.png" />
      <page pageid="90" ns="6" title="File:Basic Tenets of Patanjala Yoga Ramaswami.cover-v3.png" />
      <page pageid="88" ns="6" title="File:Basic Tenets of Patanjala Yoga Ramaswami.cover.png" />
      <page pageid="85" ns="6" title="File:Basic Tenets of Patanjala Yoga Ramaswami.pdf" />
      <page pageid="17" ns="6" title="File:CA7EMHZV-800x600.jpg" />
    </pages>
  </query>
</api>