[2] 
[DFN[UAX #50]]
は、
[[Unicode Consortium]]
による[[縦組]]の[[仕様書]]です。

* 仕様書

[REFS[
- [1] 
[CITE[UAX #50: Unicode Vertical Text Layout]], [TIME[2020-03-07 07:23:12 +09:00]] <https://www.unicode.org/reports/tr50/>
]REFS]

* アルゴリズム

[FIG(short list)[ [3] [[UAX #50]]
- [[縦グリフ]]
- [CODE[Vertical_Orientation]]
]FIG]

* 歴史

[REFS[
- [7] [CITE@en['''['''css3 writing modes''']''' text orientation discussion]], [[John Daggett]], [TIME[2011-07-24 16:15:19 +09:00]], [TIME[2020-01-17T22:50:03.000Z]], [TIME[2020-10-31T03:52:21.225Z]] <https://lists.w3.org/Archives/Public/www-style/2011Jul/0402.html>
- [6] [CITE@en[Strawman proposal for UTR #50: Unicode Properties for Vertical Text Layout]], [[Eric Muller]], [TIME[2011-09-01 12:25:29 +09:00]], [TIME[2020-01-17T22:50:06.000Z]], [TIME[2020-10-31T03:25:48.459Z]] <https://lists.w3.org/Archives/Public/www-style/2011Sep/0003.html>
- [4] [CITE[UTR #50: Unicode Properties for Vertical Text Layout]], 
2011-10-04,
[TIME[2011-10-04T14:02:12.000Z]], [TIME[2020-10-29T09:27:45.992Z]] <https://www.unicode.org/reports/tr50/tr50-1.html>
]REFS]

[5] 
[[CSS]] 関係者からの要望 [SEE[ [[CSS Writing Modes]] ]]



[8] [CITE[21222-uax50-harmony.pdf]], [TIME[2021-10-01T14:46:54.000Z]], [TIME[2021-10-08T14:45:17.869Z]] <https://www.unicode.org/L2/L2021/21222-uax50-harmony.pdf>


[9] 
[[UAX #50]] をそのまま実装してもまともに[[縦書き]]できる気がしないんだよなあ、不思議だなあ