ISO/TR 21276:2018定义了ISO/TC 285编制的文件中的使用术语。还提供了基本示意图，以演示本文定义的某些概念之间的关系。 ISO/TR 21276:2018故意排除了一些在测试和评估实践中可能有用的信息。避免指定特定产品，即使是作为示例，以使文件保持最新和包容性。

ISO/TR 21276:2018 defines terms for use in documents prepared by ISO/TC 285. Basic schematic illustrations are also provided to demonstrate relationships among certain concepts defined herein. ISO/TR 21276:2018 deliberately excludes some information that could be useful in the practice of testing and evaluation. Designation of specific products, even as examples, is avoided so that the document stays up-to-date and inclusive.