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PRI 354: Registration of additional sequences in the Moji_Joho collection


A submission for the "Registration of additional sequences in the Moji_Joho collection" has been received by the IVD Registrar. This submission is currently under review according to the procedures of UTS #37, Unicode Ideographic Variation Database, with an expected close date of 2017-11-17.

At the end of the review period, the submission has been incorporated into the 2017-12-12 version of the IVD as 674 additional registered IVSes for the Moji_Joho collection, 181 of which are shared with the Hanyo-Denshi collection.

This page remains available for archival purposes.

Review instructions

Reviewers are encouraged to comment on any aspect of the submissions, but more particularly on:

  • whether the glyphic subset corresponding to a proposed sequence is indeed a glyphic subset of the base character for the sequence
  • whether the proposed sequences are congruent with the scope of their collection, or whether a new collection may be more appropriate

All comments should be sent via the reporting form and will be forwarded to the submitter. The content of the submission may be adjusted during the review period to account for the comments received.

Submission details

The content of this section has been provided by the submitter, but was edited by the IVD Registrar.


  • Name and address of registrant: Information Technology Standards Commission of Japan, Information Processing Society of Japan, Kikai-Shinko-Kaikan Bldg., 3-5-8 Shiba-koen, Minato-ku, Tokyo 105-0011 JAPAN
  • Names and email addresses of representatives: Tetsuji ORITA
  • URL of the website describing the submission: http://mojikiban.ipa.go.jp/mjc/2/
  • Registered identifier for the collection: Moji_Joho
  • Pattern for the sequence identifiers: MJ[0-9]{6}


After the first sequences for the Moji_Joho IVD collection were registered in the 2014-05-16 version of the IVD, JSC2 continued their standardization work for the Moji Joho Kiban project (文字情報基盤整備事業 moji jōhō kiban seibi jigyō), conducted by the Moji Joho Kiban committee under the IT Strategic Headquarters (an organization within the Japanese Cabinet), in association with IPA (Information-Technology Promotion Agency, Japan).

The standardization process for CJK Unified Ideographs Extension F was recently completed with its inclusion in ISO/IEC 10646 5th Edition, which is now in the process of being published. Extension F was also included in Unicode Version 10.0, which was released on 2017-06-20. 1,645 characters from the Moji Joho Kiban project are included in Extension F, and some of the MJ glyphs that need to be distinct for government administrative use have been unified and therefore share the same code points, hence the need to register additional sequences in the Moji_Joho IVD collection.

Additional details

The primary goal of this submission is to register new sequences for glyphs that have been deemed unifiable with Extension F code points but whose forms need to be distinct from the forms that are associated with that of the base characters.

This submission includes 16 pairs of identical or nearly identical glyphs that share the same base character, which would normally be disunified (aka separately encoded) due to the non-cognate rule of Annex S, but discussions by the IRG resulted in a recommendation that they be unified. However, because there is a requirement to distinguish these pairs for Japanese government IT system use, they have been submitted with unique identifiers that will result in unique IVSes. These 16 pairs are listed below:

Base Character Sequence Identifiers
U+36A2 㚢 MJ000583 & MJ000584
U+43D9 䏙 MJ003782 & MJ003783
U+43E2 䏢 MJ003791 & MJ003792
U+440B 䐋 MJ003833 & MJ003834
U+4E41 乁 MJ006371 & MJ006370
U+5140 兀 MJ007207 & MJ007208
U+5207 切 MJ007459 & MJ057061
U+6535 攵 MJ012947 & MJ012948
U+66F8 書 MJ013491 & MJ013492
U+681D 栝 MJ013841 & MJ013840
U+21FEE 𡿮 MJ034911 & MJ034910
U+2314D 𣅍 MJ037624 & MJ037625
U+2628B 𦊋 MJ044844 & MJ057703
U+269E0 𦧠 MJ046074 & MJ046075
U+28119 𨄙 MJ050234 & MJ050235
U+2912E 𩄮 MJ058872 & MJ052839

List of proposed sequences

Click here to view the 674 proposed sequences to be added to the Moji_Joho IVD collection, 181 of which are shared with registered Hanyo-Denshi sequences, and the remaining 493 are new sequences to be registered.

Representative Glyph Charts

Representative glyphs for the submitted sequences are available in PDF format, which shows the sequences indexed by their base character, in code point order, and highlighted to distinguish them from registered sequences. The complete charts (447KB) show all of the submitted sequences.

Updates and Comments received

This page may be updated from time to time to inform reviewers of some of the comments received.