The List Editor is a way to look at the MIDI data of a region, not graphically as they are displayed in the Editor, but in a tabular form. This way of seeing the MIDI data allows for a quicker "debugging" of a MIDI region, and for a fast non-graphical (i.e. no mouse involved) editing. This list has a vertical flow, i.e. the first events (in time) are on the top of the window, and the latest are at its bottom.
It is accessed by selecting the Region > MIDI > List Editor… menu while having one MIDI region selected, or by Right clicking the MIDI region and choosing Name_Of_The_Region > MIDI > List Editor…
The window displays the following MIDI data:
At the top of the window is a Sound Selected MIDI Notes, which is a toggle button allowing to listen to a note as it is selected.
Each value can be manually modified, by Left clicking it. The Name field is related to the Number one, and cannot be edited. To change a note, its number must be changed, which will be reflected in the Name field.