也可以调用其他函数和sub(类以外的)，甚至可以使用use语句引用script库，从script库中调用类、函数和sub。

You can also call other functions and subs (outside of the class), and you can even call classes, functions, and subs from script libraries that are referenced with a Use statement.

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因此，全局参数虽然可以被引用，但它们不能在函数中直接赋值（除非它们用global 语句命名）。

Thus, global variables cannot be directly assigned a value within a function (unless named in a global statement), although they may be referenced.

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