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>
    <allredirects garcontinue="Commonwealth_of_Independent_States|7602" />
  </query-continue>
  <query>
    <pages>
      <page pageid="428" ns="0" title="-1 to 100" />
      <page pageid="460" ns="0" title="2012 Berlin Hackathon" />
      <page pageid="4946" ns="0" title="Batamshinskiy" />
      <page pageid="4948" ns="0" title="Bayturasay" />
      <page pageid="4955" ns="0" title="Birshoghyr" />
      <page pageid="4957" ns="0" title="Bestamaq" />
      <page pageid="7603" ns="0" title="Treaty of Eternal Friendship" />
      <page pageid="7760" ns="0" title="Convention relating to International Exhibitions" />
      <page pageid="7783" ns="0" title="Protocol to the Convention on International Interests in Mobile Equipment on Matters specific to Aircraft Equipment" />
      <page pageid="7790" ns="0" title="Aircraft Protocol to the Cape Town Treaty" />
    </pages>
  </query>
</api>