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="Journal_Club" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="49" ns="0" title="Batch Files - Hilary Dugan" />
      <p pageid="76" ns="0" title="Contact Corinna about data workflow" />
      <p pageid="78" ns="0" title="Contact Finnish colleagues" />
      <p pageid="77" ns="0" title="Contact Norwegians colleagues" />
      <p pageid="56" ns="0" title="Creating Maps and Assessing Spatial Autocorrelation" />
      <p pageid="67" ns="0" title="Data" />
      <p pageid="62" ns="0" title="Downloading and Processing Radiation Data" />
      <p pageid="55" ns="0" title="Filling Time-Series Data Gaps - Derek Roberts" />
      <p pageid="79" ns="0" title="Follow up with NYCDEP" />
      <p pageid="50" ns="0" title="Importing Google Maps to Plot Data- Kait Farrell" />
    </allpages>
  </query>
</api>