track height minimize key command

[Ling]

Is there a key command to change all track sizes to the same small size?

I can do it by holding alt and mouse clicking on a single track's height. But I was hoping there was a key command that would do it without the mouse. And of course there is Alt+Start+up/down arrows, but that doesn't zero the offsets, and it's multiple keystrokes.

We have alt+A to minimize the horizontal zoom and see the whole session...it would be nice to have the same thing in the vertical.

[Ling]

anyone?

thx