Distortion-oriented visualization techniques such as magnification-lenses, zooming functions and fish-eye views are useful in a wide range of singleuser computing systems. They assist visualization of large information spaces by easing the transition between high-levels of detail in a local area of interest and the global context of the information space. In real-time groupware environments, distortion-oriented visualizations offer additional benefits. By providing one distorted region for each

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... user of a groupware workspace, users can maintain an awareness of the location and activities of their colleagues while simultaneously having a focused area of detail for their own work. We describe the design and evaluation of DOME, a fully-functional distortion-oriented multi-user editor. Unexpected usability problems and potential solutions are discussed.