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="刀劍神域" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="10" ns="0" title="BDMV外掛字幕結構" />
      <p pageid="35" ns="0" title="Fate/Zero" />
      <p pageid="34" ns="0" title="Fate/stay night" />
      <p pageid="3" ns="0" title="OVH" />
      <p pageid="19" ns="0" title="SKIP・BEAT！華麗的挑戰" />
      <p pageid="32" ns="0" title="Seiu外掛結構模版" />
      <p pageid="11" ns="0" title="SmartGet" />
      <p pageid="12" ns="0" title="XD" />
      <p pageid="15" ns="0" title="修復檔使用需知" />
      <p pageid="6" ns="0" title="冰與火之歌" />
    </allpages>
  </query>
</api>