forward slide change
/ˈfɔːwəd ˈslaɪd ˈtʃeɪndʒ/
n
English · forward slide change中文 · 换片按钮Español · mecanismo de avance y cambio de la diapositivaFrançais · commande de marche avant
意味：Button that causes the next slide to be projected on the screen.