2. 约定 (Conventions)
本文档中的关键词 "MUST" (必须),"MUST NOT" (禁止),"REQUIRED" (必需),"SHALL" (应),"SHALL NOT" (不应),"SHOULD" (应该),"SHOULD NOT" (不应该),"RECOMMENDED" (推荐),"MAY" (可以) 和 "OPTIONAL" (可选) 应按照 RFC 2119 中描述的方式进行解释.
本文档中的关键词 "MUST" (必须),"MUST NOT" (禁止),"REQUIRED" (必需),"SHALL" (应),"SHALL NOT" (不应),"SHOULD" (应该),"SHOULD NOT" (不应该),"RECOMMENDED" (推荐),"MAY" (可以) 和 "OPTIONAL" (可选) 应按照 RFC 2119 中描述的方式进行解释.