Press and drag with mouse or finger. Plain instructions are at the bottom of the screen. Esc or P pauses. Choose tools on the left panel (keys 1 to 6). Tool 6 is the Saline Irrigator to wash away blood and debris. Press E for emergency IV fluids/epinephrine. If the patient enters V-Fib cardiac arrest, press Spacebar or click SHOCK to defibrillate. Zoom with + / − buttons, mouse wheel, or +/- keys.