spinning pinwheel

Vista之前是个沙漏外观，Windows Vista及之后是旋转的环（spinning ring）外观。classic Mac OS上使用手表外观。macOS是spinning pinwheel（英语：spinning pinwheel）。 指针在超链接上, 外观改为一只手，食指伸出。也可能弹出提示信

pinwheel. The most famous example of that is WR 104..." Plait 2018，"The astronomers who observed it think that the primary (brighter) one is spinning