Multiple dynamic view support for cooperative work

VIEW Media is a cooperative hypermedia system, which supports cooperative work utilizing hypermedia documents. It provides fundamental functions for cooperative work support systems and enables developers to construct various groupware such as distributed presentation systems, education systems, conference systems, and so forth. This system provides a powerful and flexible mechanism of customization. The mechanism can alter presentation, structure, behavior and authority of hypermedia documents and workspace, which supports dynamic change of roles of users. This paper describes the purpose of VIEW Media, its basic model and implementation, and a user interface which supports conferences among users who have different access rights to shared documents.