<td></td><td class="PParameter  prettyprint " nowrap>value</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Helper method to invoke <a href="../util/mxToolbar-js.html#mxToolbar.addOption" class=LFunction id=link57 onMouseOver="ShowTip(event, 'tt19', 'link57')" onMouseOut="HideTip('tt19')">mxToolbar.addOption</a> on <a href="#mxDefaultToolbar.toolbar" class=LVariable id=link58 onMouseOver="ShowTip(event, 'tt4', 'link58')" onMouseOut="HideTip('tt4')">to