They have "layers" so you can do some shortcuts and the extra keys become active - so e.g. activate a layer and now U, I, O, and P are home, end, insert , delet

They have "layers" so you can do some shortcuts and the extra keys become active - so e.g. activate a layer and now U, I, O, and P are home, end, insert , delete etc. Change layer back to normal and off you go.