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For example, consider the handheld Palm machines. These devices are light, small (pocketsized), graspable in one hand, and have a stylus to be used by the other hand. They are designed to support four specific tasks (calendars, to-do lists, address lists, and brief notetaking), and are designed to be used like a paper personal organizer. The user’s calendar data is in the Palm, and thus the Palm device is the user’s calendar. The task of setting an appointment is the task of writing it on the Palm.