Once you have clicked, you can move the mouse to the target, then click again to select where the connection goes.

一旦进行了单击，您就可以将鼠标移向目标，然后再次单击以选择该连接所指向的位置。

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This code takes the same arguments as before: a target object and a set of mouse handlers.

这段代码使用和前面一样的参数：一个目标对象和一组鼠标处理程序。

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This function does a good bit of position-munging, but it all boils down to a simple idea: Keep constant the precise distance between the mouse cursor and the target object.

该函数做很多位置整理(position - munging)工作，但都可归结为一个简单的思想：不断保存鼠标光标与目标对象之间的精确的距离。

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