[i18n-activity] It should be easier to specify direction for RTL script users

r12a has just created a new issue for 
https://github.com/w3c/i18n-activity:

== It should be easier to specify direction for RTL script users ==
10.2.12 tts:direction
https://w3c.github.io/ttml2/spec/ttml2.html#style-attribute-direction

Is it correct to assume that a person trying to use TTML for Arabic or
 Hebrew or any of the many other languages using so-called RTL scripts
 will need to explicitly add the tts:direction attribute to every `p`?
  If so, that's a significant disincentive to use TTML for people from
 those areas. 

One way to approach this might be to allow a file-wide default 
direction to be set, like using <html dir="ltr" in HTML.

Another may be to make the default `auto`, so that tts:direction only 
needs to be applied when the auto-detection rules fail (ie. when text 
in a block begins with a character with a strong opposite 
directionality).


Please view or discuss this issue at 
https://github.com/w3c/i18n-activity/issues/345 using your GitHub 
account

Received on Thursday, 16 February 2017 15:10:36 UTC