A composite state where exactly one of the constituent elements is visible at any point in time.<q ref="core.gml:CompositeState">CompositeState</q>(c) SAP AG 2003-2006. All rights reserved. Indicates whether to show the title bar, if applicable. Indicates whether to show the toolbar, if applicable.Event if this property is <code>false,</code> the <q ref="core.gml:StateOR!toolbar">toolbar</q> property can have valid toolbar defintion. In such case, the toolbar will not be displayed. Defines toolbar that can be shown for this StateOR, if any.