You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <logevents>
      <item logid="264" ns="2" title="Benutzer:Rek" pageid="0" type="newusers" action="create2" user="Netbreaker" timestamp="2015-01-08T11:01:03Z" comment="">
        <param>24</param>
      </item>
      <item logid="172" ns="2" title="Benutzer:OBryant" pageid="0" type="newusers" action="create" user="Rek" timestamp="2012-09-28T16:25:12Z" comment="">
        <param>24</param>
      </item>
      <item logid="171" ns="6" title="Datei:Domainpruefung t-online.jpg" pageid="214" type="upload" action="upload" user="Susannf" timestamp="2012-02-08T09:47:22Z" comment="" />
      <item logid="170" ns="0" title="MySQL" pageid="0" type="delete" action="delete" user="WikiRoot" timestamp="2012-01-03T16:59:41Z" comment="Inhalt vor dem Leeren der Seite: &#039;[[Category:Datenbanken]]&#039;" />
      <item logid="169" ns="6" title="Datei:1und1-Autorisierungscode.jpg" pageid="189" type="upload" action="upload" user="Susannf" timestamp="2011-12-29T12:48:30Z" comment="1und1 Autorisierungscode" />
      <item logid="168" ns="6" title="Datei:1und1-Domainfreigabe.jpg" pageid="188" type="upload" action="upload" user="Susannf" timestamp="2011-12-29T12:39:30Z" comment="1und1 Domainfreigabe" />
      <item logid="167" ns="0" title="Grafische Oberfläche" pageid="182" type="patrol" action="patrol" user="WikiRoot" timestamp="2011-12-22T15:11:19Z" comment="">
        <patrol cur="1093" prev="0" auto="1" />
      </item>
      <item logid="166" ns="0" title="Linux" pageid="165" type="patrol" action="patrol" user="WikiRoot" timestamp="2011-12-22T15:11:13Z" comment="">
        <patrol cur="1092" prev="1090" auto="1" />
      </item>
      <item logid="165" ns="0" title="Serverwartung" pageid="181" type="patrol" action="patrol" user="WikiRoot" timestamp="2011-12-22T15:10:16Z" comment="">
        <patrol cur="1091" prev="0" auto="1" />
      </item>
      <item logid="164" ns="0" title="Linux" pageid="165" type="patrol" action="patrol" user="WikiRoot" timestamp="2011-12-22T15:10:10Z" comment="">
        <patrol cur="1090" prev="1088" auto="1" />
      </item>
    </logevents>
  </query>
  <query-continue>
    <logevents lestart="2011-12-22T15:09:40Z" />
  </query-continue>
</api>