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  1. rss component implemented by RssPollingComponent class periodically polls RSS feeds defined on its urlStrings property for changes. In this case rss component monitors http://rss.cnn.com/rss/cnn_topstories.rss and http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/front_page/rss.xml
  2. When an update is found, rss component creates a normalized message that contains the new items. It then sends the normalized message to the NMR. The NMR routes the message to the trace component.
  3. The trace component displays the new items on the console.

Typical output looks like the following:

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