由电子邮件应用程序将它作为文本文档维护。
It is maintained as a text document by an E-mail application.
如何使用XLink来使链接文档维护起来更有效、更方便？
How can you use XLink to make linking documents much more efficient and easy to maintain?
Second Life 团队为文档维护了一个公共的 wiki。
The Second Life team maintains a public wiki for documentation.
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