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="20070801144146" timestamp="2007-08-01T14:41:46Z" ns="0" title="Royal Fleet Auxiliary" />
        <page value="20070814122706" timestamp="2007-08-14T12:27:06Z" ns="0" title="William Whittingham" />
        <page value="20070814123603" timestamp="2007-08-14T12:36:03Z" ns="0" title="John Richardson" />
        <page value="20070909115950" timestamp="2007-09-09T11:59:50Z" ns="0" title="Armada de Chile" />
        <page value="20070909120103" timestamp="2007-09-09T12:01:03Z" ns="0" title="Armada Española" />
        <page value="20071011221424" timestamp="2007-10-11T22:14:24Z" ns="0" title="Royal Dockyards" />
        <page value="20071026174712" timestamp="2007-10-26T17:47:12Z" ns="0" title="Royal Marine Forces" />
        <page value="20071117123831" timestamp="2007-11-17T12:38:31Z" ns="0" title="Royal Spanish Navy Officer Ranks" />
        <page value="20071117172502" timestamp="2007-11-17T17:25:02Z" ns="0" title="Royal Hellenic Navy Officer Ranks" />
        <page value="20071118114733" timestamp="2007-11-18T11:47:33Z" ns="0" title="Ottoman Navy Officer Ranks" />
      </results>
    </querypage>
  </query>
</api>