If you create an arrangement with a lot of Control and/or Command Tracks, they can end up dominating the desktop. One way to hide them is to move them to the bottom and then zoom out. However, this is only a temporary fix, as next time you open the project, everything will be zoomed out again. It would be handy if there was an option to hide all Control and Command Tracks (or alternatively, an option to hide tracks selected by the user). Then only the tracks containing music would be visible during a performance.