X.500季员会设想了目录的三种基本用途，人与人之间的通信(Interpersonal Communication)、系统间通信(Intersystem communication)、认证服务(Authentication Services)。
基于16个网页-相关网页
写信和记笔记构成手写的写作能力、组织能力以及学习人与人之间的通信沟通交流能力。
Writing letters and notes incorporated hand writing skills, organizational skills, and learning about the person or persons you correspond with.
但基本的概念仍类似于上述人与人之间的谈话的概念，只不过这里是应用程序使用共同的语言进行通信，且通常会跨越某种网络。
But the concept is still similar to that of a conversation with the applications communicating, using a common language and often across a network of some sort.
人与人之间的交互提供了一个不能通过搜索工具和资产存储库加以解决的通信层次。
The human interaction provides a communication level which can not be addressed with search tools and asset repositories.
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