Minimize, maximize, close, set across the board to change the icon in question.

最小化、最大化、关闭、设置、疑问的图标全线更改。

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Click the square icon again to minimize the window.

再次点击正方形图标，把窗口最小化。

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Click the square icon again to minimize the window.

再次点击正方形图标，把窗口最小化。

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