atom.xml

<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.w3.org/2005/Atom http://www.kbcafe.com/rss/atom.xsd.xml">
    <title>title</title>
    <subtitle>subtitle</subtitle>
    <entry>
        <id>id1</id>
        <title>title1</title>
    </entry>
    <entry>
        <id>id2</id>
        <title>title2</title>
    </entry>
</feed>