When I generate a text subtitle, the default length is 10 secs. I can change the length to say 3 secs when I specify the text, but all this does is convert a 10 sec event into a 3 sec event repeated 3 1/3 times. I then have to drag the end of the event to the first notch to get the desired length. This is a trivial problem for one subtitle but for many it is unnecessary work. Is there any way to change the default length?