This feature shows animations of tanks and reservoir levels, pump speeds and water flow rate or velocity. The user specifies the first and last nodes and the animation is created automatically. Many surge devices such as air valves and bladder tanks are also animated in detail. The user can set the animation speed, and the animation can be stopped and started, allowing the user to view and analyze the model’s transient activity at any point in the simulation. Animations can be saved as AVI files.