Shortcut F
I guess I'm being thick. In 8.5 I could highlight a track, hit H (which hid anything not selected)and then hit F which expanded the selected track(s) both vertically and horizontally to fill the track view. Although the shortcut command in Platinum indicates that "F" re-sizes "All Tracks" vertically to fit project window. It's not doing that at my house. When I hide all tracks except the one I'm working on, pressing "F" does not increase the the track height to fill the window. It remains the same height as if all the tracks were still visible.
Is the key phrase here "All tracks"?
Apologies if this behavior was changed between 8.5 and X1. I have X1, 2 and 3 but never used them after they were installed.