>>17783
>to override the period of individual frames you edit the corresponding layer's name so that it includes the text
That's a tip that I needed! I remember setting different times from years ago but not how I did it.
I'll look into the GAP.

>>17784
That is something I surely won't use but thanks anyway I read it through, it could be prove useful in some other way.

>>17785
You also didn't säge properly. For some reason it's not easy to do that here.