[i]Tracks Window Enhancements
Holding the Ctrl key while using a mouse scroll wheel, or holding the Ctrl key while pressing the +/- buttons on the Tracks Window tool bar zooms in/out the window vertically.[/i]

This is quite a useful enhancement, previously when I held the Ctrl key while pressing the +/- buttons the window zoomed in/out horizontally, which I also found quite useful.
How does one achieve horizontal zoom now?

Vintage