Hyundai Verna Owner's Manual page 170

M M ode selection
The mode selection button controls the direction of the air flow through the
ventilation system.
(if equipped)
F
OHCI047687R/OHCR046366
The air flow outlet port is converted
as follows:
Face-Level (B, D, F)
Air flow is directed toward the upper
body and face. Additionally, each
outlet can be controlled to direct the
air discharged from the outlet.
Bi-Level (B, C, D, E, F)
Air flow is directed towards the face
and the floor.