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="20090427090446" timestamp="2009-04-27T09:04:46Z" ns="0" title="Общие правила сети" />
        <page value="20090427090510" timestamp="2009-04-27T09:05:10Z" ns="0" title="Правила для хелперов" />
        <page value="20090427091348" timestamp="2009-04-27T09:13:48Z" ns="0" title="Правила сети" />
        <page value="20090427103242" timestamp="2009-04-27T10:32:42Z" ns="0" title="О нашей сети" />
        <page value="20090427122851" timestamp="2009-04-27T12:28:51Z" ns="0" title="Правила для администрации сети" />
        <page value="20090427123544" timestamp="2009-04-27T12:35:44Z" ns="0" title="Правила составления жалоб для abuse/kline" />
        <page value="20090428064929" timestamp="2009-04-28T06:49:29Z" ns="0" title="IRC" />
        <page value="20090428190513" timestamp="2009-04-28T19:05:13Z" ns="0" title="Серверное ПО" />
        <page value="20090430114259" timestamp="2009-04-30T11:42:59Z" ns="0" title="География сети" />
        <page value="20090515082036" timestamp="2009-05-15T08:20:36Z" ns="0" title="G-line" />
      </results>
    </querypage>
  </query>
</api>