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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20081009221318" timestamp="2008-10-09T22:13:18Z" ns="0" title="Installing VTK on OS X" />
        <page value="20090413045511" timestamp="2009-04-13T04:55:11Z" ns="0" title="Examples" />
        <page value="20090414155042" timestamp="2009-04-14T15:50:42Z" ns="0" title="To Do" />
        <page value="20090414170718" timestamp="2009-04-14T17:07:18Z" ns="0" title="Model Robustness" />
        <page value="20090417004309" timestamp="2009-04-17T00:43:09Z" ns="0" title="Display settings" />
        <page value="20090417011843" timestamp="2009-04-17T01:18:43Z" ns="0" title="Symmetry Breaking and Motility" />
        <page value="20090417012032" timestamp="2009-04-17T01:20:32Z" ns="0" title="Forces during Symmetry Breaking" />
        <page value="20090417012115" timestamp="2009-04-17T01:21:15Z" ns="0" title="Circumferential and Radial measurements" />
        <page value="20090417012134" timestamp="2009-04-17T01:21:34Z" ns="0" title="Ellipsoid and Capsule symmetry breaking" />
        <page value="20090417223754" timestamp="2009-04-17T22:37:54Z" ns="0" title="Using Git" />
      </results>
    </querypage>
  </query>
</api>