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>
    <alllinks alcontinue="Software_resources|1" />
  </query-continue>
  <query>
    <alllinks>
      <l fromid="1" ns="0" title="Backups" />
      <l fromid="1" ns="0" title="File and directory permissions and ownership" />
      <l fromid="1" ns="0" title="Guidelines and Terms of use" />
      <l fromid="1" ns="0" title="Hardware resources" />
      <l fromid="1" ns="0" title="Joining the discussion" />
      <l fromid="1" ns="0" title="Logging in to a terminal session" />
      <l fromid="1" ns="0" title="Migrating your data safely" />
      <l fromid="1" ns="0" title="Obtaining an account" />
      <l fromid="1" ns="0" title="Running jobs on our servers" />
      <l fromid="1" ns="0" title="Safety and security at the Lab" />
    </alllinks>
  </query>
</api>