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="Baby_Monitor_With_Sensor" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="1794" ns="0" title="BIBLIOGRAFIA SOBRE TEATRE POPULAR VALENCIÀ DELS SEGLES XIX-XX" />
      <p pageid="3535" ns="0" title="BSF Recruitment And NIC Recruitment In India" />
      <p pageid="7778" ns="0" title="Baby Displays" />
      <p pageid="11473" ns="0" title="Baby Displays For Seniors" />
      <p pageid="11344" ns="0" title="Baby Displays Thermometers. Uncover The Full Range" />
      <p pageid="9641" ns="0" title="Baby Monitor" />
      <p pageid="7770" ns="0" title="Baby Monitor 3G For IPhone IPad Android And Mac" />
      <p pageid="9643" ns="0" title="Baby Monitor And WiFi HackRF Collection" />
      <p pageid="8596" ns="0" title="Baby Monitor For IPhone By CodeGoo" />
      <p pageid="11435" ns="0" title="Baby Monitor Interference" />
    </allpages>
  </query>
</api>