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>
    <allfileusages gafcontinue="Gettingstarted.pdf|1378" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1518" ns="0" title="Notes from the State Presidents&#039; List" />
      <page pageid="1539" ns="0" title="Strategic Process Article for State Newsletters" />
      <page pageid="1548" ns="0" title="Training Videos" />
      <page pageid="1646" ns="0" title="AAUW TN, Harolyn Ropp, Scavenger Hunt" />
      <page pageid="1651" ns="0" title="Tips on using the MSD" />
      <page pageid="1657" ns="0" title="AAUW business card templates" />
      <page pageid="1781" ns="0" title="Brochure and Flyer Collection" />
    </pages>
  </query>
</api>