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>
    <allimages gaicontinue="(STE)_Highlight_this_left_side.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="3020" ns="6" title="File:&#039;...or is it just me?&#039;.png" />
      <page pageid="3400" ns="6" title="File:(STE) About half done.png" />
      <page pageid="3415" ns="6" title="File:(STE) Almost done with bottom part.png" />
      <page pageid="3402" ns="6" title="File:(STE) Almost done with stair.png" />
      <page pageid="3386" ns="6" title="File:(STE) Blue snow brick.png" />
      <page pageid="3385" ns="6" title="File:(STE) Drop down map select.png" />
      <page pageid="3413" ns="6" title="File:(STE) Finished with stairs.png" />
      <page pageid="3418" ns="6" title="File:(STE) First Node.png" />
      <page pageid="3396" ns="6" title="File:(STE) Fish in water test.png" />
      <page pageid="3403" ns="6" title="File:(STE) Fixed top part 1.png" />
    </pages>
  </query>
</api>