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<P>This page is designed to be viewed by a browser which supports
Netscape's Frames extension. This text will be shown by browsers which
do not support the Frames extension. You can link below to the frames
that make up this page.</P>
<UL>
<li> <a href="../L3_welcome.html">welcome page</a>
<li> <a href="../L3_general.html">general description</a>
<li> <a href="../L3_online.html">online project</a>
<li> <a href="../L3_filter.html">filter project</a>
</UL>
</BODY>
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