Thanks!
I think I had to had a little more explanation..
I know kinds of way to do this. but
just like “drag to set the fade length”
I have meant I wish to avoid this action “to set length”, so
I set default length in the property to apply.
Now I can do this with the key “*” for the start edge of clip, but
CANNOT for the ends.
Not for two clips like crossfading. for single clip.
What do you think is there any way????