RFC 6949.It also discusses the use of PDF for Internet-Drafts, and available or needed software tools for producing and working with PDF.

The Hypertext Transfer Protocol (HTTP) is a stateless applicationlevel protocol for distributed, collaborative, hypertext information systems.This document provides an overview of HTTP architecture and its associated terminology, defines the "http" and "https" Uniform Resource Identifier (URI) schemes, defines the HTTP/1.1 message syntax and parsing requirements, and describes related security concerns for implementations.

This specification gives guidelines for selection, use, and presentation of International Resource Identifiers (IRIs) which include characters with inherent right-to-left (rtl) writing direction.

Internationalized Resource Identifiers (IRIs) are Unicode strings used to identify resources on the Internet. Applications that use IRIs often define a means of comparing IRIs to determine when two IRIs are equivalent for the purpose of that application. Some applications also define a method for canonicalizing an IRI -- translating one IRI into another which is equivalent under the comparison method used. This document gives guidelines and best practices for defining and using IRI comparison and canonicalization methods. Comparison methods are used to determine equivalence. As URIs are a subset of IRIs, the guidelines apply to URI comparison as well.

This document defines a new protocol element, the Internationalized Resource Identifier (IRI), as an extension of the Uniform Resource Identifier (URI). An IRI is a sequence of characters from the Universal Character Set (Unicode/ISO 10646). A mapping from IRIs to URIs is defined, which provides a means for IRIs to be used instead of URIs, where appropriate, to identify resources.

This document defines the format of Uniform Resource Identifiers (URIs) to identify resources that are reached using Internet mail.It adds better internationalization and compatibility with Internationalized Resource Identifiers (IRIs; RFC 3987) to the previous syntax of 'mailto' URIs (RFC 2368).