The playback location is the point in the Pro Tools Timeline where you can begin playing back audio or MIDI in your session.
The playback location is displayed in counters and indicators in the Edit window, Transport window, and Big Counter. The playback location (or Edit selection) is also indicated by a playback or edit cursor in the Timeline or playlist of the Edit window.
Pro Tools also provides a pre-roll control for setting playback to begin before the playback location. See
Basic Transport Controls and Counters.