tmfl

And also excluding return track would be better.

I was looking for this so long.

Now I can zoom all tracks together vertically. Thank you.

I just want to ask one question. Is there a way to make the buttons work when not only pressing but also holding?

Just one thing: when loading the device, a window pops up for a second. I do not know if it can be fixed.

Thank you for this device. I just bought it and works great.