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<p>Return true if this box is included in B. </p>
<dl class="section note"><dt>Note</dt><dd><ol type="1">
<li>An empty box contains nothing.</li>
<li>A non-empty box contains any empty box.</li>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="structtgx_1_1_box3.html#a9cc5c4921b2c869356da1c7ab79fd673" title="Return true if the box contains the point v.">contains()</a> </dd></dl>

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