Representing Label Generation Rulesets Using XML
RFC 7940, “Representing Label Generation Rulesets Using XML”, is a Proposed Standard document published in August 2016 by K. Davies, A. Freytag. The canonical text is published by the RFC Editor.
Abstract
This document describes a method of representing rules for validating identifier labels and alternate representations of those labels using Extensible Markup Language (XML). These policies, known as "Label Generation Rulesets" (LGRs), are used for the implementation of Internationalized Domain Names (IDNs), for example. The rulesets are used to implement and share that aspect of policy defining which labels and Unicode code points are permitted for registrations, which alternative code points are considered variants, and what actions may be performed on labels containing those variants.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7940 is hosted at rfc-editor.org. Available in TXT,HTML.
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