TY for this recent line of discussion. Since the X Series, I had never before stumbled onto the Event Filter and had been missing it.  Also, after searching "inline" in the current reference guide and bouncing between the guide and a recent tune, I found a chain nested of menus/submenus that enabled me to make the inline piano roll view  acessible via double clicking behavior. I did not know about this specific personal workflow preference (perhaps because it is somewhat "hidden"), but retr