Double-click the background area of a window.
In the Piano Roll and Step Editors, a step up the display hierarchy shows the events of all regions in the Tracks area.
In the Event List, clicking the Display Level button moves you up one level in the display hierarchy. The display remains much the same but shows a list of regions, rather than a list of individual events, along with region positions, names, track numbers, and lengths. The MIDI region that you were just editing is selected within the list of region names.
In the Score Editor, clicking the Display Level button takes you to the higher display level. Double-clicking a staff (at an empty point), reverts to a lower display level.
Download the guides:
Logic Pro User Guide: PDF