gtk-widget, gtk-buildable, gtk-orientable, g-object, common-lisp:standard-object, common-lisp:t

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The gtk-separator widget is a horizontal or vertical separator widget, depending on the value of the orientation property of the gtk-orientable interface, used to group the widgets within a window. It displays a line with a shadow to make it appear sunken into the interface. The gtk-separator implementation has a single CSS node with name separator. The node gets one of the .horizontal or .vertical style classes.