Alt+left/right should remember last selection
1) score with some notes
2) select a note other than the first
3) press Esc to deselect
4) press Alt+Right
Result: first element of score is selected, when it would be better if we remember the element most recently selected and simply continued navigation from there. This would be excellent protection against inadvertently losing the selection, very important for blind users unable to re-establish the previous selection any other way.