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>
    <alltransclusions gatcontinue="Set_Address|110" />
  </query-continue>
  <query>
    <pages>
      <page pageid="11" ns="0" title="Equipment" />
      <page pageid="69" ns="0" title="Manual MR16" />
      <page pageid="100" ns="0" title="Freestyle Manual" />
      <page pageid="212" ns="0" title="RonTest" />
      <page pageid="251" ns="0" title="Manual Express v3" />
      <page pageid="254" ns="0" title="LE Versions" />
      <page pageid="350" ns="0" title="Manual Express v4" />
      <page pageid="359" ns="0" title="Arch LE" />
      <page pageid="360" ns="0" title="Arch Dongle" />
      <page pageid="608" ns="0" title="Archive Equipment" />
    </pages>
  </query>
</api>