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The Distributed Interactive Virtual Environment (DIVE) is a heterogeneous distributed virtual reality system based on UNIX and Internet networking protocols. Each participating process has a copy of a replicated database and changes are propagated to the other processes with reliable multicast protocols. DIVE provides a dynamic virtual environment where applications and users can enter and leave the environment on demand. Several user-related abstractions have been introduced to ease the task of application and user interface construction.>
Carlsson et al. (Mon,) studied this question.