[ttml1] Use of 'em' units in tts:fontSize on region element is not well defined.

skynavga has just created a new issue for 
https://github.com/w3c/ttml1:

== Use of 'em' units in tts:fontSize on region element is not well 
defined. ==
ยง8.2.9 needs to place a constraint on the use of 'em' units when 
expressing tts:fontSize on a region element; alternatively, it should 
specify that 1em is equal to the initial value of tts:fontSize, 
namely, 1c, for the purpose of resolving an 'em' unit based font size

Please view or discuss this issue at 
https://github.com/w3c/ttml1/issues/206 using your GitHub account

Received on Sunday, 20 December 2015 01:52:31 UTC