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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.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20080513020205" timestamp="2008-05-13T02:02:05Z" ns="0" title="Characteristic (mathematics)" />
        <page value="20080514162856" timestamp="2008-05-14T16:28:56Z" ns="0" title="Normal space" />
        <page value="20080516133717" timestamp="2008-05-16T13:37:17Z" ns="0" title="Characteristic subgroup" />
        <page value="20080516134049" timestamp="2008-05-16T13:40:49Z" ns="0" title="Normal (physics)" />
        <page value="20080516134926" timestamp="2008-05-16T13:49:26Z" ns="0" title="Normal alkane" />
        <page value="20080516135140" timestamp="2008-05-16T13:51:40Z" ns="0" title="Normality of aqueous solution" />
        <page value="20080516135210" timestamp="2008-05-16T13:52:10Z" ns="0" title="Normal (chemistry)" />
        <page value="20080516135707" timestamp="2008-05-16T13:57:07Z" ns="0" title="Perfect (economics)" />
        <page value="20080516140143" timestamp="2008-05-16T14:01:43Z" ns="0" title="Perfect information" />
        <page value="20080516140745" timestamp="2008-05-16T14:07:45Z" ns="0" title="Perfect competition" />
      </results>
    </querypage>
  </query>
</api>