-Mousetrap.bind('n', function() { input_index ++; setpic(); });
-Mousetrap.bind('p', function() { input_index --; setpic(); });
-Mousetrap.bind('b', function() { exposure ++; setpic(); });
-Mousetrap.bind('d', function() { exposure --; setpic(); });
+Mousetrap.bind('n', function() { move_to_nondeleted(1); setpic(); });
+Mousetrap.bind('p', function() { move_to_nondeleted(-1); setpic(); });
+Mousetrap.bind('N', function() { input_index ++; say(input_index); setpic(); });
+Mousetrap.bind('P', function() { input_index --; say(input_index); setpic(); });
+Mousetrap.bind('b', function() { exposure ++; say_exposure(); setpic(); });
+Mousetrap.bind('d', function() { exposure --; say_exposure(); setpic(); });
+Mousetrap.bind('x', mark_deleted);
+Mousetrap.bind('X', mark_not_deleted);