THE DESIRED ATMOSPHERIC COMPOSITION 
CAN BE ATTAINED USING THE FOLLOWING
BUTTONS:

TO INCREASE A COMPONENT:
F1  - H
F2  - N
F3  - O
F4  - F
F5  - CL

TO DECREASE A COMPONENT:
F6  - H
F7  - N
F8  - O
F9  - F
F10 - CL
+
