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="20070430222302" timestamp="2007-04-30T22:23:02Z" ns="0" title="Syntax help" />
        <page value="20070430235207" timestamp="2007-04-30T23:52:07Z" ns="0" title="Screen - A VR Art Installation" />
        <page value="20070430235837" timestamp="2007-04-30T23:58:37Z" ns="0" title="Screen" />
        <page value="20070502184036" timestamp="2007-05-02T18:40:36Z" ns="0" title="Tips and Tricks" />
        <page value="20070504041825" timestamp="2007-05-04T04:18:25Z" ns="0" title="Porters" />
        <page value="20070514064852" timestamp="2007-05-14T06:48:52Z" ns="0" title="Spatialized Sound" />
        <page value="20070518080554" timestamp="2007-05-18T08:05:54Z" ns="0" title="Mbajorek" />
        <page value="20070525145721" timestamp="2007-05-25T14:57:21Z" ns="0" title="Super Browser" />
        <page value="20070529190409" timestamp="2007-05-29T19:04:09Z" ns="0" title="Interaction with Multi-Spectral Images" />
        <page value="20070614175853" timestamp="2007-06-14T17:58:53Z" ns="0" title="Protein Visualization" />
      </results>
    </querypage>
  </query>
</api>