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Proposal for Khmer Script Root Zone‬ Label Generation Rules (LGR)

Open Date: 15 April 2016 Close Date: 28 May 2016
Originating Organization: IDN Program
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Brief Overview:

The Khmer script community has formed the Khmer Generation Panel (GP), which in turn has developed a Proposal for the Khmer Script Root Zone Label Generation Rules (Proposal and Proposal Documentation).  As per the LGR Procedure, this proposal is being posted for public comments to allow those who have not participated in the Khmer GP to make their views known to the GP. This also includes the communities and the generation panels for related scripts like Lao, Myanmar and Thai, and other relevant scripts including those covered by Neo-Brahmi group.  Based on the feedback, the Khmer GP will finalize the proposal for submission for integration into the Label Generation Rules for the Root Zone.


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Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."