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HTML is good for debugging, but is unsuitable for application use.
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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="20161225132354" timestamp="2016-12-25T13:23:54Z" ns="0" title="Differenz Saldenliste Kontoblatt bei Steuerkonten" />
        <page value="20161225133949" timestamp="2016-12-25T13:39:49Z" ns="0" title="Fibu" />
        <page value="20161225134013" timestamp="2016-12-25T13:40:13Z" ns="0" title="Fibu-Schnittstelle" />
        <page value="20161225134103" timestamp="2016-12-25T13:41:03Z" ns="0" title="Export §131 BAO" />
        <page value="20161225145040" timestamp="2016-12-25T14:50:40Z" ns="0" title="Eröffnungsbilanz" />
        <page value="20161225145426" timestamp="2016-12-25T14:54:26Z" ns="0" title="Neues Wirtschaftsjahr anlegen" />
        <page value="20161225145954" timestamp="2016-12-25T14:59:54Z" ns="0" title="UVA-Verprobung" />
        <page value="20170114103847" timestamp="2017-01-14T10:38:47Z" ns="0" title="Salden (Export)" />
        <page value="20170114105642" timestamp="2017-01-14T10:56:42Z" ns="0" title="Kontenblätter (Export)" />
        <page value="20170114115458" timestamp="2017-01-14T11:54:58Z" ns="0" title="Journal (Export)" />
      </results>
    </querypage>
  </query>
</api>