Old Navigation Metaphors Scrolling Scrolling is great when you have little structure, just a list or a piece of text. In particular it’s only good if the extension is in one direction – if you only have to scroll up and down (traditional text editor or web-page display) or left and right (new Microsoft Windows Phone 7 display) but not both. For mostly text this works well because we are used to text wrapping to defined columns in books and newspapers so extending this to the computer screen left natural. But for an image or a map where you need…