This document discusses considerations for supporting right-to-left languages in web content. It covers HTML elements and attributes like <bdo> and dir that control text directionality. Unicode bidirectional algorithms are explained for proper rendering of mixed left-to-right and right-to-left text. CSS properties like direction and unicode-bidi that affect directionality are also mentioned. Examples show how to write text in a right-to-left language like Arabic or Hebrew in web pages and social media.

1. CMS
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4. Contact Form 7

5. 56 (2012 2 )

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11. ※

12. Left-to-Right Right-to-Left
LTR RTL

14. HTML
<em> </em>

15. <me/> <me>
<em> </em>
</em> <em>

18. LTR RTL
(Bidirectionality)

19. HTML CSS
• lang
• direction
• dir
• unicode-bidi
• <bdo>
Unicode
• Bidirectional

20. Unicode Bidirectional
( )
mark 3.1% 0.2 ‫.'&رْك‬
m a r k 3 . 1 % ‎‫م‬‎ ‎‫ا‬‎ ‎‫ر‬‎ ْ ‎‫ك‬‎ 2 . 0 .

21. Twitter &#x202E;
(RIGHT-TO-LEFT OVERRIDE)
RTL

23. •
• [text your-name "hoge"] ←
• RTL
• ...

24. •
•

25. !() ‫,+*ا‬
!‫תודה‬
!&-, ‫10/* از‬
Thank you!
!
...
(https://twitter.com/#!/takayukister)
2012 2 18 vol.1
(http://fww-a11y.in/)