A flexible architecture for heterogeneous replayable workspaces

This paper presents a novel and flexible architecture to support the asynchronous sharing of computer-supported workspaces (CSWs), or simply replayable workspaces. Such workspaces are composed of multiple, interacting tools. Through the capture, re-execution, and manipulation of a session with a CSW, it is possible to reuse valuable collaborative information, (e.g., the how-to process). The session is encapsulated into a session object composed of heterogeneous media streams that represent input sequences to CSW tools. CSW tools are modeled as plug-in components to the CSW. A stream controller process extends temporal-awareness to a CSW tool and its media. A session manager coordinates the various stream controllers and their media. The architecture provides flexible coordination of the various tools found on a CSW and fine-grained integration of their heterogeneous media.