我们仅仅是刚刚起步，还需要围绕着更丰富、变化更多的学习内容进行更深入的研究，进一步验证、细化和扩展这里列出的设计和过程框架。

We've only just begun: We need to do much deeper work against richer and more diverse learning content to further validate, refine, and extend the design and process framework outlined here.

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例如，可以扩展这个接口来提供您应用程序用来验证用户身份的一个关键文件的内容。

For example, you can extend the interface to provide the contents of a key file that your application USES to authenticate users.

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虽然这只是对于简单的DITA内容来说的一个概念验证系统，但通过扩展可以支持完整的产品系统。

Although this is only a proof-of-concept for simple DITA content, it can be extended for more robust support in a full production system.

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