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>
    <allredirects>
      <r ns="0" title="Corruption of syslogs (dbcc rebuild log)" />
      <r ns="0" title="Fixing system tables in the master database after a change of Characterset / SortOrder" />
      <r ns="0" title="Installation guidelines ASE 15.7" />
      <r ns="0" title="Installation guidelines IQ 12.6 and 12.7" />
      <r ns="0" title="Sybase on linux-distro matrix" />
      <r ns="0" title="WebServices ASE" />
      <r ns="0" title="Xen" />
    </allredirects>
  </query>
</api>