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>
    <pages>
      <page ns="0" title="Central Web-based Management" missing="" />
      <page ns="0" title="Collective Cherry-picking" missing="" />
      <page ns="0" title="Preloaded Rate tables and statistics" missing="" />
      <page ns="0" title="Roadmap" missing="" />
      <page ns="0" title="Softswitch on own hardware or in the cloud" missing="" />
      <page ns="14" title="Category:Video Tutorials" missing="" />
      <page pageid="2" ns="0" title="Vision" touched="2012-11-10T07:25:02Z" lastrevid="1115" counter="19755" length="105" />
      <page pageid="33" ns="0" title="Documentation" touched="2019-10-10T08:58:09Z" lastrevid="2405" counter="2983437" length="39184" />
      <page pageid="585" ns="0" title="Routing - Rating Platform" touched="2019-10-10T08:42:36Z" lastrevid="2400" counter="3155" length="9" new="" />
    </pages>
  </query>
</api>