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>
    <links plcontinue="1|0|Breast_Reconstruction_Market_Landscape" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page">
        <links>
          <pl ns="0" title="4G wireless technology developments" />
          <pl ns="0" title="A market study on Hybrid vehicles and the concept of V2G" />
          <pl ns="0" title="Alopecia - Hair Loss" />
          <pl ns="0" title="Antibody against TNF" />
          <pl ns="0" title="Application of Conjoint Analysis for Total Knee Replacement Surgery Alternatives" />
          <pl ns="0" title="Artificial Retina" />
          <pl ns="0" title="Bio-PET" />
          <pl ns="0" title="Bone Substitutes in Dental Practice" />
          <pl ns="0" title="Boston Scientific - Company Profile" />
          <pl ns="0" title="Botox - from Medical Procedure to Household Word" />
        </links>
      </page>
    </pages>
  </query>
</api>