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Reducing the Problems of Group Undo

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Date

1999

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Source

Proceedings of the 1999 ACM International Conference on Supporting Group Work

Publisher

Association for Computing Machinery

Abstract

Providing undo functionality in groupware has been identified as an important, but difficult problem. Existing solutions show deficiencies like lacking generality, being too complex, being inefficient, or failing to yield acceptable results in common situations. In this paper we describe a new approach which reduces local group undo to a transformation-based method for combining the effects of concurrently issued user commands. Besides transformations we introduce mirror and folding operators in order to build a unique and consistent multidimensional model of the user interaction. In this way the problems of group undo mentioned above can be either overcome or at least reduced.

Description

Ressel, Matthias; Gunzenhäuser, Rul (1999): Reducing the Problems of Group Undo. Proceedings of the 1999 ACM International Conference on Supporting Group Work. DOI: 10.1145/320297.320312. New York, NY, USA: Association for Computing Machinery. pp. 131–139. Phoenix, Arizona, USA

Keywords

operation transformations , group editors , real-time groupware , undo , CSCW , consistency maintenance

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DOI

10.1145/320297.320312

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GROUP 1999