I've seen this on demos by Cakewalk, etc, where Brandon (or whoever) clicks one track at a time in the track view, and upon each click, the track expands to a good height, while the others are minimized.  I searched the menus and help for how to switch this on but couldn't find it.
 
Any help guys?
 
Thanks
 

It's View > Auto Track Zoom in the TV's menu.

Cool, thanks.  I guess I wasn't thinking it would be called that, but it makes sense LOL.