Thus, while using this mouse hand of man will be in a really comfortable position that will help to avoid unnecessary effort and tension in the joints during manipulation.

因此，使用这种鼠标的人，手得到一个非常舒适的位置，可避免操作中手关节上不必要的紧张。

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In general, the left mouse button is used for all the primary direct-manipulation functions, such as triggering controls, making selections, drawing, and so on.

总的来说，鼠标左键用于所有主要的直接操作功能，如启动控件、选择及绘画等。

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While we discuss the topic in detail in Chapter 21, in our current discussion of direct manipulation it is worth addressing the mouse interactions required by several controls.

我们现在讨论的直接操作中有必要详细讨论控件所必需的鼠标交互。

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AutoCAD and page layout programs require manipulation of a lot of images and the slight jolt of a force feedback mouse hitting an edge or the pop of it falling into a point is a major improvement over squinting at a tiny line on a 21-inch monitor.

FORBES: Desktop fingerprints