From http://www.w3schools.com (Copyright Refsnes Data)

RSS <title>, <link>, and <description> Elements

Definition and Usage

Each <item> element defines an article or "story" in the RSS feed.

The <item> element has three required child elements:

<title> - Defines the title of the item (e.g. RSS Tutorial)
<link> - Defines the hyperlink to the item (e.g. http://www.w3schools.com/rss)
<description> - Describes the item (e.g. New RSS tutorial on W3Schools)

Example

<?xml version="1.0" encoding="ISO-8859-1" ?>
<rss version="2.0">

<channel>
  <title>W3Schools Home Page</title>
  <link>http://www.w3schools.com</link>
  <description>Free web building tutorials</description>
  <item>
    <title>RSS Tutorial</title>
    <link>http://www.w3schools.com/rss</link>
    <description>New RSS tutorial on W3Schools</description>
  </item>
  <item>
    <title>XML Tutorial</title>
    <link>http://www.w3schools.com/xml</link>
    <description>New XML tutorial on W3Schools</description>
  </item>
</channel>
</rss>

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Complete RSS Reference