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>
    <alllinks galcontinue="IBHLink_S5++:S7_SPS_mit_IBHLink_S5++" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Beckhoff Twincat AMD Bluescreen" missing="" />
      <page ns="0" title="CNC 840C" missing="" />
      <page ns="0" title="Diskussionspunkte Onlineshop" missing="" />
      <page pageid="672" ns="0" title="Diagnose" />
      <page pageid="674" ns="0" title="EPROMMER" />
      <page pageid="115" ns="0" title="FB-Status mit Lokalvariablen im Oszilloskop darstellen" />
      <page pageid="390" ns="0" title="IBHLink:Historie" />
      <page pageid="1095" ns="0" title="IBHLink S5++:Beckhoff TwinCAT SPS mit IBHLink S5++" />
      <page pageid="380" ns="0" title="IBHLink S5++:LOGO! mit IBHLink S5++" />
      <page pageid="1442" ns="0" title="IBHLink S5++:S7 1500 SPS mit IBHLink S5++" />
    </pages>
  </query>
</api>