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>
    <random>
      <page id="3398" ns="0" title="Creating Project Views from Server Resident Project Plans for OnePager Pro Add-in for Version 6.0" />
      <page id="3391" ns="0" title="Legend Position Options for Multi-Page Outputs for Version 6.0" />
    </random>
  </query>
</api>