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+<title>Rules and filtering</title>
+<link href="../../book.css" type="text/css" rel="stylesheet"></head>
+<body>
+
+<h2>Rules and filtering</h2>
+<p>In order to manipulate the generated trace data, you can specify various
+types of rules and filters, depending on what you want to find out.</p>
+<p>Usually, the criteria for the rules is defined to match the trace with
+any of the following prerequisites:</p>
+<ul>
+ <li>a certain component ID</li>
+ <li>a component from a certain group</li>
+ <li>a pre-defined text string.</li>
+</ul>
+
+<p>You can specify the following types of rules in TraceViewer:
+<ul>
+<li><b>Color:</b> identifies traces that meet the specific criteria with a
+certain color.</li>
+<li><b>Line count:</b> counts the number of occurrences for a certain type
+of trace (for example, used to indicate how many times a function has been
+called during a test case).</li>
+<li><b>Variable tracing:</b> shows the values of certain variables and the
+history of their occurrences.</li>
+<li><b>Filter:</b> filters specific traces by allowing the creation of complex
+statements, which include certain traces and exclude others.</li>
+<li><b>Trigger:</b> used for setting up start and stop triggers that define
+specifically when traces should be received. </li>
+</ul>
+
+</p><p><b>Note:</b> Compared to trace <i>activation</i>, filters are not as
+strict about the type of data they pass on from the device.
+For more information, see <a href="decode_file.htm">Dictionary file and trace
+activation</a>.</p>
+
+<h5>Related tasks</h5>
+<ul>
+ <li><a href="../tasks/advancedfilter.htm">Setting filtering options</a></li>
+</ul>
+
+<div id="footer">Copyright © 2007-2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
+License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a>.</div>
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+</html>