When you're done, release the Shift key, and you return to the normal pointer.

当您完成时，释放shift键，鼠标将返回到正常指针状态。

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Normal control characters (characters with values less than 32) : This especially includes character 0, traditionally called NUL; I call it NIL to distinguish it from c's NULL pointer.

常规控制字符(字符值小于32)：还特别包括字符0，传统上称做NUL；我把它称为NIL以区别于c语言中的NULL指针。

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With normal software each object must be referenced via pointer chains to roots, preventing any semantic groupings and raising the question, “What is the atomic unit in this context?”

而在其它软件中，对象需要通过指针链来找到根对象，这导致语义分组无法使用，并引发这样的问 题：“在这种情况下，原子单位是什么？”

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