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="Email_and_phone.png|1527" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1283" ns="4" title="Lightwiki:About" />
      <page pageid="1314" ns="0" title="Swimming Lessons" />
      <page pageid="1332" ns="0" title="Isaiah 40" />
      <page pageid="1344" ns="0" title="I&#039;ll See You In My Dreams" />
      <page pageid="1353" ns="0" title="Jesus Loves Me" />
      <page pageid="1356" ns="0" title="Awesome God" />
      <page pageid="1427" ns="0" title="Heaven with peace, hope, joy, faith, and love" />
      <page pageid="1452" ns="0" title="Lauren&#039;s Lifestyle" />
      <page pageid="1567" ns="0" title="The Next Page" />
      <page pageid="1715" ns="0" title="Atheria&#039;s Page" />
    </pages>
  </query>
</api>