A Toplevel widget is a top-level window, similar to a Frame except that its X parent is the root window of a screen rather than its logical parent. Its primary purpose is to serve as a container for dialog boxes and other collections of widgets; its only visible features are its background and an optional 3-D border. Notable options include menu, which installs a Menu as the window’s menubar. Inherits from BaseWidget and Wm, so a toplevel is managed by the window manager. Refer to the Tk toplevel manual page for the full list of options.