You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <alllinks alcontinue="Perturbacija I|1" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="Delta potencial I" />
      <l ns="0" title="Delta potencial II" />
      <l ns="0" title="Dvodimenzionalni harmonski oscilator" />
      <l ns="0" title="Harmonski oscilator" />
      <l ns="0" title="Heisenbergovo načelo nedoločenosti" />
      <l ns="0" title="Koherentna stanja harmonskega oscilatorja I" />
      <l ns="0" title="Koherentna stanja harmonskega oscilatorja II" />
      <l ns="0" title="Kvazivezana stanja" />
      <l ns="0" title="Meritev" />
      <l ns="0" title="Neskončna potencialna jama" />
    </alllinks>
  </query>
</api>