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="Eagle_Inn_(_Venue_UK_Manchester_)" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="92" ns="0" title="Background listening - attentive listening" />
      <p pageid="25" ns="0" title="Blank Canvas : UK Promoter" />
      <p pageid="38" ns="0" title="Cafe Ort (Venues UK Midlands)" />
      <p pageid="13" ns="0" title="Cafe Oto ( Venues: UK, London )" />
      <p pageid="90" ns="0" title="Catalyst - Relational Functions" />
      <p pageid="76" ns="0" title="Club db Bangor" />
      <p pageid="120" ns="0" title="Collectivism" />
      <p pageid="80" ns="0" title="Creating a Merseyside venues list for Improvisers" />
      <p pageid="137" ns="0" title="Critical Studies in Improvisation" />
      <p pageid="86" ns="0" title="Dialogue - relational functions" />
    </allpages>
  </query>
</api>