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UK-Source Ideographs

UK-Source Ideographs documents the source references for the CJK Unified Ideographs that are submitted by the UK (United Kingdom) to the IRG (Ideographic Research Group) for inclusion in their working sets by providing the actual submissions. Such ideographs are referred to as UK-source ideographs, which is documented in Unicode Standard Annex #38 (UAX #38), Unicode Han Database (Unihan), as the kIRG_UKSource property.

  • IRG N2107R2 (PDF), which was originally submitted as IRG N2107 for IRG #45, documents the 1,640 UK-source ideographs that were submitted for IRG Working Set 2015, 1,566 of which are encoded in CJK Unified Ideographs Extension G (Unicode Version 13.0). The per-ideograph attributes can be found in an Excel file that is a PDF attachment. For purely legacy reasons, these 1,640 UK-source ideographs, along with 16 that were withdrawn in the first revision of IRG N2107, can also be found in Unicode Standard Annex #45 (UAX #45), U-Source Ideographs, as source references UK-01313 through UK-02968.

  • IRG N2232R (PDF), which was originally submitted as IRG N2232 for IRG #49, documents the 1,000 UK-source ideographs that were submitted for IRG Working Set 2017, most of which are expected to be encoded in CJK Unified Ideographs Extension H. The per-ideograph attributes can be found in an Excel file that is a PDF attachment.

Evidence images for both IRG N2107R2 and IRG N2232R are easily downloaded from the Latest Release as UKSourceEvidence.pdf, which is a 1,236-page bookmarked PDF.

The glyphs that correspond to the UK-source ideographs are available in TrueType (TTF) format, their use is covered under the terms of the Arphic Public License (also see LICENSE.md), and can be easily downloaded from the Latest Release. For IRGN2232.ttf, the glyphs are mapped from PUA (Private Use Area) code points as specified in the Excel file that is attached to IRGN2232R.pdf.

UK submissions to future IRG working sets will be added to this repository as appropriate.