[2] [[HTML要素]]の [DFN[[CODE(HTMLa)@en[[[bdi]]]] [[属性]]]]は、
[RUBYB[[[双方向性孤立化]]]@en[bidirectional isolation]]の有無を指定するものとして
[[W3C]] [RUBYB[[[国際化中核作業部会]]]@en[I18N Core WG]]が提案しています。

[3]
:状態:[[W3C]] [[作業原案]]
:[[要素]]:[[HTML要素]]
:[[属性名]]:[CODE(HTMLa)@en[[[bdi]]]] ([Q[bidirectional isolate]] ([Q[[[双方向性孤立化]]]]) より)
:[[属性値]]:[CODE(HTML)@en[[[yes]]]], [CODE(HTML)@en[[[no]]]], [CODE(HTML)@en[[[bdi]]]]
:[[既定値]]:[CODE(HTML)@en[[[no]]]]

* 仕様書

- [1] [CITE@en-US[Additional Requirements for Bidi in HTML]] ([TIME[2010-03-05 16:28:54 +09:00]] 版) 
-- <http://www.w3.org/TR/2010/WD-html-bidi-20100304/#bidi-isolation-solution>


[4] [CITE@en[Web Applications 1.0 r5669     Add a <bdi> element to safely let people insert user-generated content that may have bidi implications.Fixing http://www.w3.org/Bugs/Public/show_bug.cgi?id=10807]]
( ([TIME[2010-11-05 09:55:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=5668&to=5669>

[5] [CITE@en[Web Applications 1.0 r7930     Make <bdi> always set 'direction']]
( ([TIME[2013-06-07 07:15:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7929&to=7930>

[6] [CITE@en[Bug 23260 – Make the dir attribute use isolation instead of embedding]]
( ([TIME[2013-11-15 08:57:51 +09:00]] 版))
<https://www.w3.org/Bugs/Public/show_bug.cgi?id=23260>

[7] [CITE@en[Web Applications 1.0 r8317     Move all requirements about bidi out and just rely on CSS instead. Also, fix the CSS rules for <bdo>.]]
( ([TIME[2013-12-03 05:07:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=8316&to=8317>