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"?>
    <allredirects arcontinue="彦山権現誓助剣|2820" />
      <r fromid="98987" ns="0" title="Chōken" />
      <r fromid="94161" ns="0" title="Kōken" />
      <r fromid="99010" ns="0" title="Suō" />
      <r fromid="98884" ns="0" title="Test 4" />
      <r fromid="94127" ns="0" title="Ōdōgu" />
      <r fromid="94235" ns="0" title="Ōkuchi" />
      <r fromid="99009" ns="0" title="Ōsode" />
      <r fromid="1492" ns="0" title="伊勢参宮名所図会" />
      <r fromid="336" ns="0" title="保留2" />
      <r fromid="3031" ns="0" title="助六所縁江戸桜" />