作者可能担心如果他不用一种正规的格式，那他的文章不会受到认真的对待，他应该把这样的担心抛到一边。
The writer should let go of the fear that he won't be taken seriously unless he uses a formal style.
它提供了一整套正规的格式用于描述对象的结构，而不管语言上如何执行及这些数据的具体指代，也不用去管到底是什么样的应用程序。- A SN。
It provides a set of formal format for describing the structure of the object, regardless of language and how to refer to these specific data, do not take up tube in the end what kind of applications.
对于第一种情况，程序员完全负责保证结果文档是格式正规的。
In the first case, the programmer is fully responsible for ensuring that the resulting document is well formed.
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