Yeah the name definitely refers more to the functionality/behavior of the buttons. You'd push one of those buttons in to select a station and it'd stay pressed

Yeah the name definitely refers more to the functionality/behavior of the buttons. You'd push one of those buttons in to select a station and it'd stay pressed. When you push another button in to choose another station, the previously pressed button would "pop" back up/depress (thereby "unselecting" itself), thereby enforcing the mutual exclusivity of a station selection.