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>
    <pageswithprop pwpcontinue="5151" />
  </query-continue>
  <query>
    <pageswithprop>
      <page pageid="1038" ns="0" title="Xawtv" value="xawtv" />
      <page pageid="1887" ns="0" title="Dvbshout" value="dvbshout" />
      <page pageid="2020" ns="0" title="Zap" value="zap" />
      <page pageid="2359" ns="0" title="PcHDTV HD-5500" value="pcHDTV HD-5500" />
      <page pageid="2439" ns="0" title="PcHDTV HD-2000" value="pcHDTV HD-2000" />
      <page pageid="2440" ns="0" title="PcHDTV HD-3000" value="pcHDTV HD-3000" />
      <page pageid="3159" ns="0" title="W scan" value="w scan" />
      <page pageid="3685" ns="0" title="Saa7162 devices" value="saa7162 devices" />
      <page pageid="3737" ns="0" title="Saa713x devices" value="saa713x devices" />
      <page pageid="5011" ns="0" title="Gnutv" value="gnutv" />
    </pageswithprop>
  </query>
</api>