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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.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <alllinks alcontinue="Native_API_stats_of_Rinternals.h_without_USE_R_INTERNALS|11" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="Code Coverage Tool for R" />
      <l ns="0" title="Distributed Computing Working Group" />
      <l ns="0" title="Distributed Computing Working Group Progress Report 2016" />
      <l ns="0" title="Initial Survey of API Usage" />
      <l ns="0" title="Initial Survey of API Usage" />
      <l ns="0" title="Native API stats of R.h" />
      <l ns="0" title="Native API stats of R.h" />
      <l ns="0" title="Native API stats of R.h" />
      <l ns="0" title="Native API stats of R.h" />
      <l ns="0" title="Native API stats of Rinternals.h with USE R INTERNALS" />
    </alllinks>
  </query>
</api>