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>
    <alllinks alcontinue="Dagsverks-journal_1890-1891|3946" />
  </query-continue>
  <query>
    <alllinks>
      <l fromid="1817" ns="0" title="Baron Magnus Armfelt, talouskatselmus kellareista, &quot;syn på källerene under förra caracters byggningen&quot; 11.11.1776, jäljennös, På Syne Rättens vägnar G.F.Synnerberg, 9 s. + 3 tyhjää sivua." />
      <l fromid="2168" ns="0" title="Cirkulations=bruket å Saaris Gård. Vuoden 1840 kantotilikirjan (I:2B, 28) välistä. Luultavasti vuodelta 1840." />
      <l fromid="1534" ns="0" title="ComputerFile" />
      <l fromid="3997" ns="0" title="Corporate:Dummy Organisation" />
      <l fromid="3938" ns="0" title="Dagsverks-journal 1890-1891" />
      <l fromid="3941" ns="0" title="Dagsverks-journal 1890-1891" />
      <l fromid="3942" ns="0" title="Dagsverks-journal 1890-1891" />
      <l fromid="3943" ns="0" title="Dagsverks-journal 1890-1891" />
      <l fromid="3944" ns="0" title="Dagsverks-journal 1890-1891" />
      <l fromid="3945" ns="0" title="Dagsverks-journal 1890-1891" />
    </alllinks>
  </query>
</api>