power-off/slide-select bar
/ˈpaʊəɹˈɒf ˈslaʃ ˈslaɪdsɪlˈɛkt ˈbɑː/
n
中文：断电滑动选择杆
中文 · 断电滑动选择杆Español · palanca corrediza de selección de diapositivasFrançais · commande de sélection manuelle
Meaning：Button that causes the slide tray to advance manually so that a specific slide can be selected.