plots obtained with HMIdefects.pro for each plot: contrast in red throughput in black case1.ps : ---------- R[0]=0.9 retardquartM= !dpi / 4.d0-!pi/20. case2.ps : ---------- T[0]=0.9 retardquartM= !dpi / 4.d0-!pi/20. case3.ps : ---------- Rs[0]=0.9 retardquartM= !dpi / 4.d0-!pi/20. case4.ps : ---------- retardquartM= !dpi / 4.d0-!pi/20.