This file contains a set of Label Generation Rules for the Ethiopic script for the Root Zone. For more details on this LGR and additional background on the script, see “Proposal for Ethiopic Script Root Zone LGR” [Proposal-Ethiopic]. This file is one of a set of LGR files that together form an integrated LGR for the DNS Root Zone [RZ-LGR-5]. The format of this file follows [RFC 7940].
The repertoire of 311 code points is described in Section 5, “Repertoire”, of [Proposal-Ethiopic] and only includes code points used by languages that are actively written in the Ethiopic script. The repertoire is based on [MSR-5], which is a subset of [Unicode 11.0].
As part of the Root Zone, this LGR includes neither decimal digits nor the HYPHEN-MINUS.
Each code point is tagged with the script or scripts with which the code point is used, and one or more references documenting sufficient justification for inclusion in the repertoire; see “References” below. Comments identify the languages using the code point, along with their [EGIDS] level.
According to Section 6, “Variants” in [Proposal-Ethiopic], there are significant numbers of code points that can be used interchangeably in the writing system of the Amharic language. Two code points are variants of each other if they can be used interchangeably in the writing system of the Amharic language and their use yields identical lexical terms for canonical labels (for labels with dictionary meaning) and same or identical representation(s) for non-canonical labels (for labels that do not have dictionary meaning). The Amharic language is the official working language of the Federal Democratic Republic of Ethiopia and many of the states within the federal system. Due to security problems these variants pose, they are treated as script wide variants beyond the Amharic language.
Variant Disposition: All variants are of type “blocked”, making labels that differ only by these variants mutually exclusive: whichever label containing either of these variants is chosen earlier would be delegated, while any other equivalent label should be blocked.
This LGR does not define allocatable variants.
The specification of variants in the Root Zone LGR follows the guidelines in [RFC 8228].
This LGR does not define character classes.
The LGR includes the set of required default WLE rules and actions applicable to the Root Zone and defined in [MSR-5]. They are marked with ⍟.
According to Section 7, “Whole Label Evaluation (WLE) Rules” in [Proposal-Ethiopic], this LGR does not define rules specific to Ethiopic.
The Root Zone LGR for the Ethiopic script was developed by the Ethiopic Generation Panel. For details on methodology and contributors, see Sections 4 and 8 in [Proposal-Ethiopic], as well as [RZ-LGR-5-Overview].
The following general references are cited in this document:
For references consulted particularly in designing the repertoire for the Ethiopic script for the Root Zone please see details in the Table of References below. Reference [3] and [7] refer to the Unicode Standard versions in which corresponding code points were initially encoded. Reference [101] to [104] correspond to sources given in [Proposal-Ethiopic] for justifying the inclusion of the corresponding code points. Entries in the table may have multiple source reference values.
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