在安装每个产品时，用户可以参考各产品的用户手册以及下载的包中附带的说明。
Users can refer to the individual user manuals and instructions that come with the downloaded package to install each product.
元数据管理：业务需求、数据模型、ETL 过程设计、用户手册，等等。
Metadata management: business requirements, data models, ETL process designs, user manuals, and so on.
实际上，操作者能够在没有在线文档或者用户手册的情况下就能够使用系统。
The fact that the operators were able to use it without adequate online documentation or manuals was impressive.
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