palanca corrediza de selección de diapositivas
/palˈanka kˌoreðˈiθa ðe sˌelekθjˈon de ðjˌapositˈiβas/
n
English: power-off/slide-select bar · 断电滑动选择杆
Significado：Button that causes the slide tray to advance manually so that a specific slide can be selected.