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Using Tcl to control a computer-participative multimedia programming environment

This paper describes how the VuSystem, a programming environment for the development of computer-participative multimedia applications, is controlled through Tcl scripts. In the VuSystem, networks of in-band media-processing modules are created and controlled by interpreted out-of-band Tcl scripts through object commands and callbacks. Tcl's extensibility, simple type system, efficient interface to C, and introspective capabilities are used by the VuSystem to produce a highly dynamic and capable media processing system.