Shape
Use naturally occurring shapes for RealThings to aid recognition by users

RealPhone Use non-rectangular windows when the user environment supports them. In Windows 95 a window's shape can be defined by the use of a non-rectangular region. Use of non-rectangular windows can significantly enhance the real-world effect of RealThings. It can also provide better screen space utilization. The RealPhone uses a non-rectangular window.

cone, cube, sphere When non-rectangular windows are not supported, transparency may be used to assist in creating a similar visual effect. Objects will appear more natural and can be more quickly identified when they have characteristic shapes that are easily recognized.