datum</code> - the instance in question</dd>
<dt><span class="strong">Returns:</span></dt><dd>the boolean value indicating whether the instance 
         is covered by this rule</dd></dl>
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<h4>grow</h4>
<pre>public abstract&nbsp;void&nbsp;grow(<a href="../../../weka/core/Instances.html" title="class in weka.core">Instances</a>&nbsp;data)
                   throws java.lang.Exception</pre>
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