lift(), tkraise(), lift(above), tkraise(above). Move self to the top of the window stack. If self is a child window, it is moved to the top of it's toplevel window. If self is a toplevel window (the root or a Toplevel window), it is moved in front of all other windows on the display. If an argument is given, the widget (or window) is moved so it's just above the given widget (window).
lower(), lower(below). Same as lift, but moves the widget to the bottom of the stack (or places it just under the below widget).