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>
    <allpages apcontinue="Communication_Tutorial_-_Alarm.Com" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="264" ns="0" title="Backing up your Database" />
      <p pageid="353" ns="0" title="Backup/Restoral" />
      <p pageid="11" ns="0" title="Basic Search" />
      <p pageid="449" ns="0" title="Bulk Programming" />
      <p pageid="62" ns="0" title="Cancel Communications" />
      <p pageid="240" ns="0" title="Cancelling communications" />
      <p pageid="480" ns="0" title="Changes in DLS" />
      <p pageid="190" ns="0" title="Communicate Tags" />
      <p pageid="886" ns="0" title="Communication Jobs" />
      <p pageid="822" ns="0" title="Communication Tutorial-PSTN" />
    </allpages>
  </query>
</api>