ters  prettyprint "nowrap>mxLayoutManager.prototype.beforeUndo = function(</td><td class="PParameter  prettyprint " nowrap>undoableEdit</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Called from <a href="#mxLayoutManager.undoHandler" class=LVariable id=link57 onMouseOver="ShowTip(event, 'tt7', 'link57')" onMouseOut="HideTip('tt7')">undoHandler</a>.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionLis