A presentation of FL's grid system in the piano roll (most of it also works for the playlist)
This is more about the focusing side of the piano roll, rather than showing the piano roll's tools.
check it out:
https://www.youtube.com/watch?v=RtGIOiKig4M
Comments are very welcome.
useful/practical comments are even more welcome.
It will turn to be a Feature request after this..., I just want to discuss about it with you before.., to see if you have more useful comments/ideas.