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基本ietf文档

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