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>
    <allpages apcontinue="Invoking_C_Programs_with_Execute_Only_for_previously_Downloaded_Programs" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="64" ns="0" title="Backlash Compensation" />
      <p pageid="42" ns="0" title="Channels Channels Channels" />
      <p pageid="73" ns="0" title="Driving Hobby Servos" />
      <p pageid="30" ns="0" title="Dynomotion Software Installation" />
      <p pageid="155" ns="0" title="Geometric Correction" />
      <p pageid="128" ns="0" title="How to convert a milling machine to a 3D printer in 3 easy steps" />
      <p pageid="56" ns="0" title="How to install KMotion.exe and KMotion in Windows 10" />
      <p pageid="159" ns="0" title="Information on BAXEDM Arc Generators used with KFLOP" />
      <p pageid="24" ns="0" title="Insert Page Test" />
      <p pageid="79" ns="0" title="Internal/concave Path Tool Radius Compensation Example G41/G42" />
    </allpages>
  </query>
</api>