Looks a bit puzzled uh I dunno how to say  that.
You are not convinced.
You  the the b the buttons change h h their function depending if y it's teletext or not
Not not many , we we want to keep it simple. So that this button fo is for teletext which is usually also the case , that usually there is a teletext button and once you press that , the channel buttons , they baco become the scrolling buttons.