> link: components/carousel/ >> "Snap to " [start|center|end] This is new to me: What on earth is "snap" and how is it done? My screen certainly does not react

> link: components/carousel/ >> "Snap to " [start|center|end] This is new to me: What on earth is "snap" and how is it done? My screen certainly does not react to finger clicks. (Btw, I don't think that unknown methods for interaction is an especially good recommendation of an user interface element library)