You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information.
<?xml version="1.0"?>
<api>
  <query>
    <blocks>
      <block id="579" user="ShirleyHerna" by="Diarmuid Crowley" timestamp="2011-09-02T21:38:23Z" expiry="infinity" reason="" nocreate="" autoblock="" />
      <block id="575" user="Anonymous" by="Diarmuid Crowley" timestamp="2011-09-02T21:37:50Z" expiry="infinity" reason="" nocreate="" autoblock="" />
      <block id="569" user="Anonymous" by="Msteitz" timestamp="2011-08-22T15:40:25Z" expiry="infinity" reason="vandalism" nocreate="" autoblock="" />
      <block id="567" user="Anonymous" by="Msteitz" timestamp="2011-08-22T15:39:03Z" expiry="infinity" reason="vandalism" nocreate="" autoblock="" />
      <block id="564" user="Harzury" by="Diarmuid Crowley" timestamp="2011-01-31T08:54:52Z" expiry="infinity" reason="Spamming links to external sites" nocreate="" autoblock="" />
      <block id="562" user="Daltfra" by="Diarmuid Crowley" timestamp="2011-01-31T08:54:09Z" expiry="infinity" reason="Spamming links to external sites" nocreate="" autoblock="" />
      <block id="560" user="Nickchae" by="Diarmuid Crowley" timestamp="2011-01-30T17:33:10Z" expiry="infinity" reason="Spamming links to external sites" nocreate="" autoblock="" />
      <block id="558" user="Latoidr" by="Diarmuid Crowley" timestamp="2011-01-30T17:32:34Z" expiry="infinity" reason="Spamming links to external sites" nocreate="" autoblock="" />
      <block id="556" user="Eleckaff" by="Diarmuid Crowley" timestamp="2011-01-30T11:45:57Z" expiry="infinity" reason="Spamming links to external sites" nocreate="" autoblock="" />
      <block id="554" user="Fiorbian" by="Diarmuid Crowley" timestamp="2011-01-29T13:07:16Z" expiry="infinity" reason="Inserting nonsense/gibberish into pages" nocreate="" autoblock="" />
    </blocks>
  </query>
  <query-continue>
    <blocks bkstart="2011-01-29T13:07:06Z" />
  </query-continue>
</api>