1.1. Requirements Notation and Conventions (要求记号与约定)

1.1 Requirements Notation and Conventions (要求记号与约定)

本文档中的关键词 "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY" 与 "OPTIONAL" 必须按照 BCP 14 [RFC2119] [RFC8174] 中所述的方式解释, 且仅当它们如本文所示以全部大写形式出现时方才适用.