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="004 GlobalAdminPermissions3.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="5052" ns="6" title="File:001 Bulk Import Voicemail ImportVoicemail.png" />
      <page pageid="4684" ns="6" title="File:001 Valet License.png" />
      <page pageid="5053" ns="6" title="File:002 Bulk Import Voicemail ImportVoicemail.png" />
      <page pageid="4685" ns="6" title="File:002 Valet Permission.png" />
      <page pageid="5055" ns="6" title="File:003 Bulk Import Voicemail ImportVoicemail ImportCSV.png" />
      <page pageid="4663" ns="6" title="File:003 GlobalAdmin Email1.png.png" />
      <page pageid="4686" ns="6" title="File:003 Valet Sync Groups.png" />
      <page pageid="5051" ns="6" title="File:004 Bulk Import SubAccount ManageSubAccount ImportSubAccount CSVGeneratorBasic.png" />
      <page pageid="4664" ns="6" title="File:004 GlobalAdminPermissions1.png" />
      <page pageid="4665" ns="6" title="File:004 GlobalAdminPermissions2.png" />
    </pages>
  </query>
</api>