Can Subtitle default Position be change from Top of screen to the bottom of screen

Topics: Windows 8 Xaml
Feb 13, 2013 at 1:13 PM
Our TTML files do not contain any regions due to reasons outside of my control.

Is there any way to make the default position of the displayed captions appear at the bottom of the screen, Currently the default appears to be at the Top of the Screen.
Feb 16, 2013 at 4:24 PM
I eventually discovered the Generic.xaml for the TimeText, here:

overriding this style allowed me to reposition the displayed text.