Enable or disable any of the options by pressing the button to the left of the option (Options are selected when the button or check mark is filled in.)

Disable Uptake

Alternately eliminates (displays check mark) and restores (hides check mark) the uptake effect. When the uptake effect is disabled, Gas Man® ignores the effect of uptake on Alveolar Ventilation (concentration effect).

Disable Return

Alternately eliminates (displays check mark) and restores (hides check mark) the return effect. When the return effect is disabled, Gas Man® ignores the effect that the presence of agent in venous blood has on alveolar tension.

Enable Vapor

Alternately adds (displays check mark) and eliminates (hides check mark) the vaporization effect. When the vapor effect is enabled, Gas Man® adds the effect of vaporization on fresh gas flow.

Although you can change options at any time during a simulation, making changes while replaying a simulation will invalidate all subsequent recorded results and adjustments. For example, rewinding a simulation (or opening a saved simulation) and changing special options would erase it from the revision point forward. (This will not affect the saved version.) Gas Man® will ask you to confirm your intent whenever you modify a simulation during replay.