Similar to a marker track or any other kind of track. It is added to a session and the user can place a notepad note anywhere in the timeline. I envision it being placed in the timeline similarly to a marker. Opening it up would simply open the notepad editor in a separate floating window where the user can edit text for any notes they may have.
Currently, there is a notepad available for individual tracks, but this is buried and in a session with many tracks, it’s easy to miss notes. A global notepad track would be tremendously valuable. Markers don’t quite serve this function as there is a limit to how much information can be assigned to a marker.