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<p>This package contains <code>Servlets</code> that implement some of the
standard functionality provided by the Catalina servlet container.  Because
these servlets are in the <code>org.apache.catalina</code> package hierarchy,
they are in the privileged position of being able to reference internal server
data structures, which application level servlets are prevented from
accessing (by the application class loader implementation).</p>

<p>To the extent that these servlets depend upon internal Catalina data
structures, they are obviously not portable to other servlet container
environments.  However, they can be used as models for creating application
level servlets that provide similar capabilities -- most obviously the
<a href="DefaultServlet.html">DefaultServlet</a> implementation, which
serves static resources when Catalina runs stand-alone.</p>

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