timeAction with text-align

Hello,
The Working Group probably already considered this but just in case, I 
better bring it up.

If Timed-text plans on supporting text-align, SMIL 2.0's attribute 
timeAction can keep the inactive text from affecting the layout.

http://www.w3.org/TR/smil20/smil-timing.html#adef-timeAction

Here's an HTML+SMIL example of timeAction="display". The text-align is 
center and the inactive text is not part of the presentation layout(IE 6 
only):

http://www.geocities.com/ramirez_j2001/test3/timeaction/timeaction_7.html

An example without timeAction:

http://www.geocities.com/ramirez_j2001/test3/timeaction/timeaction_7_without.html

As you can see text-align and timeAction go hand in hand. timeAction 
allows the content developer that wants to use text-align, keep it
it all in one Timed-text file.

Jose Ramirez