Save As Control Bar and Display Defaults
Saves the current control bar and display settings as the default. These settings are saved with a project, so you can revert to these settings by setting the display to default.
Control Bar and Display values can be set differently for every Main Window that is open in any screenset.
Some interesting displays can be created. A tall, narrow window with inspectors and track names?
Customize the Logic Pro control bar — Apple Support
The control bar offers a default set of buttons and other controls, providing commonly used options. In the center of the control bar is the LCD, which shows the playhead position and the project tempo, key, and time signature.