Please try using your mouse when the next screen appears.

敲回车键后，对鼠标的测试开始，屏幕上显示。

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This will allow you to select a rectangle using your mouse.

你将可以使用鼠标选取一个矩形框。

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Using your mouse, you heave a data file across the screen—a couple of gigabytes of data weighs a lot.

你可以用鼠标在电脑屏幕上拖出一个数据文件――两三千兆字节得数据分量可不轻。

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Go ahead and navigate to where your Atari 2600 ROMs are by using the mouse or the arrow keys on your keyboard.

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If you really want to cut through huge blocks of text, you're still better off using the scroll wheel on your mouse.

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But it isn't exactly efficient--more akin to typing a letter via hunt-and-peck with the mouse and the Mac's Key Caps instead of simply using your keyboard.

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