The widget instance window has no icons by default. But it can have some common icons, such as collapse, maximize (or restore) and close, depending on the setting of supportedModes in the Widget Definition File. You can define the attributes of the common widget instance window to control the widget instance window: whether it can be maximized, minimized or closed in the widget definition XML. Accordingly end-users can maximize, minimize or close the widget instance window. As is shown in the following image: