[10] 
[[ISO文字コード]]における[[書字方向]]の取り扱いについて。

* JIS X 0207

[SEE[ [[JIS X 0207]] ]]

* ECMA Technical Report TR/53

[1] [CITE[Technical Report TR/53]]
([TIME[2020-01-24T08:39:58.000Z]], [TIME[2020-10-07T07:22:54.327Z]])
<https://www.ecma-international.org/publications/techreports/E-TR-053.htm>

[2] [CITE[TR-53 1st edtion December 1990.pdf]], [TIME[2014-10-28T08:12:56.000Z]], [TIME[2020-10-07T07:23:42.510Z]] <https://www.ecma-international.org/publications/files/ECMA-TR/TR-53%201st%20edtion%20December%201990.pdf>

[3] [CITE[ECMA TR-053.PDF]], [TIME[2015-07-09T15:33:04.000Z]], [TIME[2020-10-07T07:23:54.317Z]] <https://www.ecma-international.org/publications/files/ECMA-TR/ECMA%20TR-053.PDF>

[20] [CITE@ja[Control functions - akinomyoga/contra]], [TIME[2021-12-31T23:05:20.000Z]], [TIME[2022-12-11T08:12:27.206Z]] <https://akinomyoga.github.io/contra/escseq.html>

* 横書きと縦書き

[4] [[JIS X 0211-1994]] 6.

[8] 
7.2.1 BDSM
7.2.3 DCSM

[5] 
8.3.115 SDS
8.3.138 SRS
8.3.112 SCP
8.3.121 SIMD

[6] 8.3.118
- 横書き 下線 horizontal line orientation: line below character 縦書き 右側線 vertical line orientation: line on the right side of character
- 横書き 上線 line above character 縦書き 左側線 line on the left side of character


-[15] 
Standard ECMA-48
[CITE[Control Functions for Coded Character Sets]], 
Fifth Edition - June 1991,
Reprinted June 1998,
[TIME[2014-10-28T04:43:11.000Z]], [TIME[2020-10-07T08:09:41.942Z]] <http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf#page=80>


[7] 8.3.131 SPD

- [[左横書き]] 上下
- [[右横書き]] 上下
- [[左横書き]] 下上
- [[右横書き]] 下上
- [[縦書き]] 左右
- [[縦書き]] 右左
- [[下から上の縦書き]] 左右
- [[下から上の縦書き]] 右左

[9] 附属書F


[12] [CITE[NS39012siba]], [TIME[2021-01-09T06:19:20.000Z]], [TIME[2000-09-03T22:12:04.454Z]] <http://web.archive.org/web/20000903220115/http://www.itscj.ipsj.or.jp/jp/ns39012.html>


>もともとのC0制御機能は,広く実装されてきたが,C0制御機能を拡張した6429は必ずしも広く実装されてはいない.例えば,左横書きと右横書きとを同時にサポートする2方向書き機能は,6429では大きく拡張され,どのような方向でも可能になっている.しかし,この拡張と精緻化によって,市場性を失う.右横書きだけが必要なのに,自由なパスまで許す仕様は実装から見放される.



[17] [CITE[日本語トランスレータリファレンス・マニュアル]], [TIME[2006-01-07T09:03:28.000Z]], [TIME[2022-05-03T05:28:14.989Z]] <http://odl.sysworks.biz/disk$axpdocdec022/japanese/jdcpsv21/trans/jtran002.htm>

* グリフ選択

[SEE[ [[書字方向依存グリフ]] ]]

* 関連

[11] [[Unicode]] と [[ISO/IEC 10646]] における扱いは、
[[bidi]], [[UTR #50]] 参照。


* メモ

[13] [CITE@en[RFC 1502 - X.400 Use of Extended Character Sets]], [TIME[2021-01-24T15:50:13.000Z]], [TIME[2021-03-22T09:28:18.156Z]] <https://tools.ietf.org/html/rfc1502#page-7>

[14] [CITE@en[src/coding.c · master · emacs / emacs · GitLab]], [TIME[2022-04-30T05:49:15.000Z]] <https://emba.gnu.org/emacs/emacs/-/blob/master/src/coding.c#L2811>

[16] [CITE[Compound Text Encoding]], [TIME[2010-12-20T07:36:19.000Z]], [TIME[2022-04-30T07:38:54.398Z]] <https://www.x.org/releases/X11R7.6/doc/xorg-docs/specs/CTEXT/ctext.html#Directionality>

[18] [[ARIB STD-B24]], [[T.61]], [[T.101]]

[19] 
[[SCO]]