Not sure if MacOS has had that in the past though...
Because Apple had a patent on overlapping AFAIK.
Thanks for this! By the way, does anyone know anyone of the icon designers of Windows 3, 3.1? I would be very happy to meet them or know more about them. For some reason I'm still fascinated with those icons even after all those years.
Susan Kare, who designed many of the original Macintosh's graphical elements, also designed many of Windows 3.x's icons.