根据脚本，复杂类型Person必须有一个xsd： string类型名字的直接子元素，和一个Person类型的友元，并且不能有其它类型和属性。

According to the schema, the Person complex type must have the direct child elements name of XSD: string type and friend of Person type, and should not have any other types and attributes.

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C#中的友元程序集（friend assembly）和非严格委托（relaxed delegate）概念都保留了下来，不过curry委托则被推迟到下一个版本中。

The C# concept of friend assemblies made it in, as well as relaxed delegates. The ability to curry delegates has been pushed off to a later release.

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名为spacefriend的友元函数，它是space类的友元，它的参数是类对象，输出类对象的x变量的值。

A friend function named spacefriend, which is a friend of class space, and which takes the class object as an argument and prints the value of its variable x.

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