2. Requirements Language (要求用语)
本文档中的关键词 "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY" 和 "OPTIONAL" 在以全大写形式出现时 (如此处所示), 应按照 BCP 14 [RFC2119] [RFC8174] 中的描述进行解释。
本文档中的关键词 "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY" 和 "OPTIONAL" 在以全大写形式出现时 (如此处所示), 应按照 BCP 14 [RFC2119] [RFC8174] 中的描述进行解释。