Thank you so much, Charlie!
I would never have imagined that 'Mute" meant frozen. I would have thought that the equivalent of the Volume slider in the Mixer had been attenuated to zero gain.
But if I understand this correctly, it is still lacking in a most important respect.
That is, I still want to be able to hear all the tracks as I play through. I don't part/ parts of the song muted. If I had to go back and forth to F5 and toggle, that would negate much of the usage I envision.
This is very useful, but unless I misunderstand, falls short of what I'd like.
Thanks again for the time you've taken to screen shoot and explain this. I'm learning a lot of things in the process. I know how to use F5, but I guess not as thoroughly as I thought.