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>
    <allredirects garcontinue="NVelocity_variables_available_in_scriptlets|80" />
  </query-continue>
  <query>
    <pages>
      <page pageid="28" ns="0" title="Database Schema" />
      <page pageid="41" ns="0" title="Data Port Utility" />
      <page pageid="75" ns="0" title="How do I create custom email templates" />
      <page pageid="118" ns="0" title="How To Reset Your Merchant ID Login" />
      <page pageid="223" ns="0" title="Store Customization AC7x" />
      <page pageid="226" ns="0" title="Data Access Layer" />
      <page pageid="227" ns="0" title="AC7x Data Access Layer" />
      <page pageid="229" ns="0" title="Custom Queries" />
      <page pageid="230" ns="0" title="Feature Customization AC7x" />
      <page pageid="265" ns="0" title="Extensionless URLs and custom error pages" />
    </pages>
  </query>
</api>