CITROEN DS3 Owner's Handbook Manual page 82

RACING front seats
Seat consisting of a seat cushion and a seat back which can be adjusted to adapt your position for maximum ease of driving and comfort.
Manual adjustments
Forwards-backwards adjustment
Lift the control and slide the seat forwards
or backwards.
Driver's or passenger's seat
height adjustment
Pull the handle upwards to raise or push
it downwards to lower, as many times as
necessary to obtain the required position.
Seat backrest angle adjustment
Push the handle towards the rear and move
the seat backrest forwards or backwards.