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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="20110206161958" timestamp="2011-02-06T16:19:58Z" ns="0" title="IP helbideak" />
        <page value="20110212180044" timestamp="2011-02-12T18:00:44Z" ns="0" title="Lehen super-nodoa larrabetzun" />
        <page value="20110403210212" timestamp="2011-04-03T21:02:12Z" ns="0" title="Zer da guifi.net" />
        <page value="20110403211020" timestamp="2011-04-03T21:10:20Z" ns="0" title="Zer ez da guifi.net (edo zein desberdintasun dago beste operadoreekin)" />
        <page value="20110403211301" timestamp="2011-04-03T21:13:01Z" ns="0" title="Internet gabe ze interes dauka honek?" />
        <page value="20110403211545" timestamp="2011-04-03T21:15:45Z" ns="0" title="Nola antolatzen/kudeatzen da Guifi.net?" />
        <page value="20110403212235" timestamp="2011-04-03T21:22:35Z" ns="0" title="Nola konektatuko naiz Internetera?" />
        <page value="20110403212649" timestamp="2011-04-03T21:26:49Z" ns="0" title="Osasunarentzako arriskurik dago?" />
        <page value="20110403213205" timestamp="2011-04-03T21:32:05Z" ns="0" title="Inguruan sor daitezkeen jarduera ekonomikoak" />
        <page value="20110507200351" timestamp="2011-05-07T20:03:51Z" ns="0" title="Supernodoa eraikitzen" />
      </results>
    </querypage>
  </query>
</api>