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>
    <allpages apcontinue="Carboy_Washer" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="1870" ns="0" title="Batch Sparge and Party Gyle Simulator" />
      <p pageid="1458" ns="0" title="Batch Sparging Analysis" />
      <p pageid="1803" ns="0" title="Beer color, alkalinity and mash pH" />
      <p pageid="1935" ns="0" title="Beer color to mash pH (v2.0)" />
      <p pageid="1" ns="0" title="Braukaiser.com" />
      <p pageid="1858" ns="0" title="Brezels and other Laugengebäck" />
      <p pageid="1781" ns="0" title="Brezels and other Laugengeb�ck" />
      <p pageid="1774" ns="0" title="Building brewing water with dissolved chalk" />
      <p pageid="1619" ns="0" title="Carbohydrates" />
      <p pageid="1504" ns="0" title="Carbonation Tables" />
    </allpages>
  </query>
</api>