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>
    <allpages>
      <p pageid="59" ns="0" title="Beamo Hacking" />
      <p pageid="54" ns="0" title="Better Cubiio Inkscape Stuff" />
      <p pageid="48" ns="0" title="CyberPower UPS USB Protocol" />
      <p pageid="44" ns="0" title="Drill Tap and Clearance Chart" />
      <p pageid="5" ns="0" title="DualShock 3" />
      <p pageid="9" ns="0" title="DualShock 4" />
      <p pageid="45" ns="0" title="Fraction Inch Lookup" />
      <p pageid="49" ns="0" title="Honeywell Portable Air Conditioner Infrared Codes" />
      <p pageid="52" ns="0" title="Hyundai iPod Connector" />
      <p pageid="56" ns="0" title="Jetson Nano Edimax EW-7611ULB" />
    </allpages>
  </query>
  <query-continue>
    <allpages apcontinue="LiPo_Battery_Pack_Notebook" />
  </query-continue>
</api>