2. Requirements Language

本节定义本文档中规范性关键词的解释规则.

RFC 文本

2.  需求语言

   本文档中的关键词 "MUST", "MUST NOT", "REQUIRED", "SHALL",
   "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED",
   "NOT RECOMMENDED", "MAY" 和 "OPTIONAL" 按 BCP 14 [RFC2119]
   [RFC8174] 中的说明解释, 但仅当它们如本文所示全部以大写字母出现时
   才按该方式解释.