Zoom on Fig. 11 around the photospheric zone showing the location of the formation region of the different shocks occurring in the atmosphere of RR Lyr in the framework of the nonlinear nonadiabatic model “RR41” (Fokin & Gillet 1997). The window of the pulsation phases in which is the second Hα emission is observed is shown by the area colored in light orange. After the phase, at about 0.45 until 0.92, particularly in this area, all shocks identified by the model are receding for the observer.