An Arcitecture for Pen-based Interaction on Electronic Whiteboards
The GUI framework of existing window systems is too complicated and heavy weight to achieve this goal, and so we designed a new architecture that works as a kind of window system for pen-based applications. Our architecture is characterized by its use of freeform strokes as the basic primitive for both input and output, flexible screen space segmentation, pluggable applications that can operate on each segment, and built-in history management mechanisms.
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