Dialogs andLevel-0 Widgets Only. If the value of this attribute is set to 1,a button will be drawn at the far-right in the title bar of the widget or dialog(left of the maximizable button). When the user clicks on that button, the widget or dialog will be changed to an icon.
The widget or dialog will return to its original size if the user double-clicks on its icon. If the value of this attribute is set to 0, no button appears in the title bar and the widget or dialog is not minimizable. You cannot minimize the widget or dialog from the keyboard (without a mouse interface).
