VisSim Viewer is a view-only version of VisSim for sharing block diagram models with anyone. Engineers can distribute their models together with a licensed copy of the Viewer to such recipients as clients, fellow engineers, sales prospects, and operator trainees. With the Viewer, you can open, view, and simulate VisSim models of any size; change block and simulation parameters to test different design scenarios and make printed copies of VisSim models for presentations or archival purposes