ShowTip(event, 'tt25', 'link35')" onMouseOut="HideTip('tt25')">mxCell</a> should be ignored as a vertex.&nbsp; This returns true if the cell has no connections.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>vertex</td><td class=CDLDescription><a href="../model/mxCell-js.html#mxCell" class=LClass id=link36 onMouseOver="ShowTip(event, 'tt25', 'link36')" onMouseOut="HideTip('tt25')">mxCell</a> whose ignored state should be returne