Microsoft Windows Mobile: the smaller versions of large operating systems reflect the familiar patterns of use, which are well-known to their desktop counterpar ts. Ver tical scrolling is the simplest and most commonly used method to present large volumes of content on smaller screens. For this purpose, however, the layout and line breaks of the content should be adapted for the smaller format. The small-screen device has evolved into an independent and well- established output medium. The processor per formance, screen resolution and colour depth that are now available, offer considerable freedom of design. Whilst the devices remain compact, the technology suppor ting small-screens has indeed grown-up. As a result, an increasing number of full-size applications are now transferring to the small screen.