is there a shortcut for the edit window vertical zoom buttons?

[Prabha]

I mean incrementally adjusting the global track height, not the waveform displayed inside the clips.

Yes, I know you can do that by using the buttons in the bottom left corner of the edit window, or by adjusting one track while pressing the alt button. But I mean to not use the mouse.

Sorry for the newbie question, but can't find the shortcut in any of the user manuals!

[priorytools]

I think if you have all tracks selected, (highlighted), hold ctrl & up arrow… down arrow smaller

[joachim]

... and without having highlighted all tracks (maybe just one track selected) :
Start + Alt + Up/Down Arrow.

And it is documented in the Shortcuts Guide Version 11.2 : page 2 (Alt for all tracks) and page 16 (height of track).

[Prabha]

Thanks Guys!! Joachim's shortcut worked nicely here (PT11 on PC).
I was badly missing the shortcut!!