| 摘要 |
A work environment is expressed as an information unit set (Snap), a data object or the like to be used in the work environment is expressed as an information unit (Mediator), a plurality of information unit sets are collected into a Place and are stored in Places into an information unit set hold history storage part 3, and an information unit set to be used in a current work environment is held by an information unit set hold part 14. If a given condition such as the change of a work or the like is prepared, then the information unit set held by the information unit set hold part 14 is stored into the information unit set hold history storage part 3 by a storage instruct part 7, and selection information such as the name of a work and the like is applied to the thus stored information unit set. If a certain piece of selection information is input from a user in order that a certain information unit set can be selected and used in a current work environment, then an information unit set select part 4 uses the thus input select information to select an information unit set corresponding to the present select information from the information unit set hold history storage part 3, and the present information unit set is then read out into the information unit set hold part 14 by an information unit set read part 5.
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