tact points. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="a0a894e3715ce8c61b7958dd6e083663da7ce77ce1a592f49d92939997976c217b"></a><!-- doxytag: member="b2_nullState" ref="a0a894e3715ce8c61b7958dd6e083663da7ce77ce1a592f49d92939997976c217b" args="" -->b2_nullState</em>&nbsp;</td><td>
<p>point does not exist </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a0a894e3715ce8c61b7958dd6e083663dac60dc479bee208