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2 | 2 |
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3 | 3 | *UK-Source Ideographs* documents the source references for the CJK Unified Ideographs that are submitted by the UK (*United Kingdom*) to the [IRG](http://appsrv.cse.cuhk.edu.hk/~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](https://unicode.org/reports/tr38/)), *Unicode Han Database (Unihan)*, as the [*kIRG_UKSource*](https://unicode.org/reports/tr38/#kIRG_UKSource) property. |
4 | 4 |
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5 | | -* [IRG N2107R2](https://github.com/unicode-org/uk-source-ideographs/raw/main/IRGN2107R2.pdf) (PDF), which was originally submitted as IRG N2107 for [IRG #45](http://appsrv.cse.cuhk.edu.hk/~irg/irg/irg45/IRG45.htm), 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](https://www.unicode.org/Public/13.0.0/charts/blocks/U30000.pdf) ([Unicode Version 13.0](https://www.unicode.org/versions/Unicode13.0.0/)). 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 For purely legacy reasons, these 1,640 UK-source ideographs, along with 16 that were withdrawn in the first revision of IRG N2107, can also be found in Unicode Standard Annex #45 ([UAX #45](https://unicode.org/reports/tr45/)), *U-Source Ideographs*, as source references UK-01313 through UK-02968. |
| 5 | +* [IRG N2107R2](https://github.com/unicode-org/uk-source-ideographs/raw/main/IRGN2107R2.pdf) (PDF), which was originally submitted as IRG N2107 for [IRG #45](http://appsrv.cse.cuhk.edu.hk/~irg/irg/irg45/IRG45.htm), 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](https://unicode.org/charts/PDF/U30000.pdf) ([Unicode Version 13.0](https://www.unicode.org/versions/Unicode13.0.0/)). 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 For purely legacy reasons, these 1,640 UK-source ideographs, along with 16 that were withdrawn in the first revision of IRG N2107, can also be found in Unicode Standard Annex #45 ([UAX #45](https://unicode.org/reports/tr45/)), *U-Source Ideographs*, as source references UK-01313 through UK-02968. |
6 | 6 |
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7 | 7 | * [IRG N2232R](https://github.com/unicode-org/uk-source-ideographs/raw/main/IRGN2232R.pdf) (PDF), which was originally submitted as IRG N2232 for [IRG #49](http://appsrv.cse.cuhk.edu.hk/~irg/irg/irg49/IRG49.htm), documents the 1,000 UK-source ideographs that were submitted for IRG Working Set 2017, 917 of which are encoded in [CJK Unified Ideographs Extension H](https://unicode.org/charts/PDF/U31350.pdf) ([Unicode Version 15.0](https://www.unicode.org/versions/Unicode15.0.0/)). The per-ideograph attributes can be found in an Excel file that is a PDF attachment. |
8 | 8 |
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9 | 9 | Evidence images for both IRG N2107R2 and IRG N2232R are easily downloaded from the [Latest Release](https://github.com/unicode-org/uk-source-ideographs/releases/latest/) as *UKSourceEvidence.pdf*, which is a 1,236-page bookmarked PDF. |
10 | 10 |
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11 | 11 | 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](https://ftp.gnu.org/gnu/non-gnu/chinese-fonts-truetype/LICENSE) (also see *LICENSE.md*), and can be easily downloaded from the [Latest Release](https://github.com/unicode-org/uk-source-ideographs/releases/latest/). 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*. |
12 | 12 |
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13 | | -The table below indicates the number of UK-Source ideographs that have been encoded in CJK Unified Ideographs **Extension** blocks as horizontal extensions and as of [Unicode Version 15.0](https://www.unicode.org/versions/Unicode15.0.0/): |
14 | | - |
15 | | -**Extension** | **Ideographs** |
16 | | ---- | --- |
17 | | -[A](https://unicode.org/charts/PDF/U3400.pdf) | 3 |
18 | | -[B](https://unicode.org/charts/PDF/U20000.pdf) | 12 |
19 | | -[C](https://unicode.org/charts/PDF/U2A700.pdf) | 1 |
20 | | -[E](https://unicode.org/charts/PDF/U2B820.pdf) | 2 |
21 | | -[F](https://unicode.org/charts/PDF/U2CEB0.pdf) | 2 |
| 13 | +The table below indicates the number of UK-Source ideographs that have been encoded in CJK Unified Ideographs **Extension** blocks, either from IRG working sets or as horizontal extensions, and as of [Unicode Version 15.0](https://www.unicode.org/versions/Unicode15.0.0/): |
| 14 | + |
| 15 | +**Extension** | **Ideographs** | **Source** |
| 16 | +--- | --- | --- |
| 17 | +[A](https://unicode.org/charts/PDF/U3400.pdf) | 3 | Horizontal extension |
| 18 | +[B](https://unicode.org/charts/PDF/U20000.pdf) | 12 | Horizontal extension |
| 19 | +[C](https://unicode.org/charts/PDF/U2A700.pdf) | 1 | Horizontal extension |
| 20 | +D | *none* |
| 21 | +[E](https://unicode.org/charts/PDF/U2B820.pdf) | 2 | Horizontal extension |
| 22 | +[F](https://unicode.org/charts/PDF/U2CEB0.pdf) | 2 | Horizontal extension |
| 23 | +[G](https://unicode.org/charts/PDF/U30000.pdf) | 1,566 | IRG Working Set 2015 |
| 24 | +[H](https://unicode.org/charts/PDF/U31350.pdf) | 917 | IRG Working Set 2017 |
22 | 25 |
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23 | 26 | UK submissions to future IRG working sets will be added to this repository as appropriate. |
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