Network Working Group S. Bradner Request for Comments: 2119 Harvard University BCP: 14 March 1997 Category: Best Current Practice Key words for use in RFCs to Indicate Requirement Levels
解释"MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL"的语义
Network Working Group D. Crocker, Ed. Request for Comments: 2234 Internet Mail Consortium Category: Standards Track P. Overell Demon Internet Ltd. November 1997 Augmented BNF for Syntax Specifications: ABNF
Network Working Group D. Crocker, Ed. Request for Comments: 4234 Brandenburg InternetWorking Obsoletes: 2234 P. Overell Category: Standards Track THUS plc. October 2005 Augmented BNF for Syntax Specifications: ABNF
Network Working Group D. Crocker, Ed. Request for Comments: 5234 Brandenburg InternetWorking STD: 68 P. Overell Obsoletes: 4234 THUS plc. Category: Standards Track January 2008 Augmented BNF for Syntax Specifications: ABNF
定义技术文档的语法
原文地址:http://www.cnblogs.com/javaleon/p/3714047.html