Influence of clumping on the line strength. Emission lines in the optical (upper panels), the UV (middle panels), and the IR (lower panels) regions of the model with M_ini = 131 M_⊙ in the CHeB evolutionary phase (mass-loss rate of log(Ṁ/M_⊙/yr = −4.23)). X-axis is centered around the wavelength indicated by the key legend (e.g., He II 4686 means He II λ4686 Å). Green lines corresponds to clumped wind models with D = 10, and black lines to smooth wind models with D = 1.