The gas scavenging system was changed to show a smoother and more consistent pressure relief and vacuum relief scenarios. Scavenging bag animated with mathematical manipulation instead of tweening. Isoflurane fill cap leak shown. VAM 4.3 Gas control knobs color-coded. O2 flow shown.
Bellows drive gas valves controlled by mathematical equations instead of tweening.
May 2000 Gradual onset of gas introduced into the system. Speed control modified to follow mouse movements. CO2 shown in manual ventilation. Placement of cylinder pressure gauges and check valves modified to reflect the most common arrangement. Gas molecules stationary if the corresponding gas is not flowing.