每个元素都可以作为子层次结构或原始标记查看。

Each element can be viewed as either a sub-hierarchy or as raw markup.

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当在派生类中被重写时，从字符串手动编写原始标记。

When overridden in a derived class, writes raw markup manually from a string.

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原始标记的这个附加编码对用户是透明的，因为他或她只希望查看和管理自己的基于角色的特定标记。

This additional encoding of the original tag is transparent to the user because he or she only wants to see and manage his or her particular role-based tags.

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