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 galcontinue="Learning" />
  </query-continue>
  <query>
    <pages>
      <page pageid="5" ns="0" title="BPJ Model Checking" />
      <page pageid="14" ns="0" title="BPJ Model Checking API" />
      <page pageid="22" ns="0" title="BPJ Programming Examples" />
      <page pageid="34" ns="0" title="BP Blockly User Guide" />
      <page pageid="40" ns="0" title="Dining Philosophers" />
      <page pageid="3" ns="0" title="Download" />
      <page pageid="11" ns="0" title="Dynamic b-threads" />
      <page pageid="33" ns="0" title="Flight of a flock of birds" />
      <page pageid="25" ns="0" title="Helicopter flight and mission" />
      <page pageid="15" ns="0" title="JavaFlow" />
    </pages>
  </query>
</api>