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>
    <allfileusages gafcontinue="CMV_RA_02_FY14_PA.pdf" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1229" ns="6" title="File:Blank Online F-VISPDAT.pdf" />
      <page pageid="1228" ns="6" title="File:Blank Online VISPDAT.pdf" />
      <page pageid="525" ns="6" title="File:BoardMembers 03 05 2013FINAL.docx" />
      <page pageid="1237" ns="6" title="File:CES One Sheet EngSpa F4518.pdf" />
      <page pageid="1227" ns="6" title="File:CES Receipt v2aFINAL11032017.pdf" />
      <page pageid="1266" ns="6" title="File:CE Discussion session v2c.ppt" />
      <page pageid="750" ns="6" title="File:CMV CoC meeting agenda 7-11-14.doc" />
      <page pageid="755" ns="6" title="File:CMV CoC meeting agenda 8-15-14.doc" />
      <page pageid="759" ns="6" title="File:CMV CoC meeting agenda 9-12-14.doc" />
      <page pageid="763" ns="6" title="File:CMV RA 02 CoC Environmental Review 2014.pdf" />
    </pages>
  </query>
</api>