Geometry of the WINE model. The shaded grey area indicates the wind volume. θ_in, θ_out represents the wind inner and outer opening angle with respect to the symmetry axis (vertical dotted line). The LOS has an inclination angle, i, with respect to the axis. The accretion disc is represented with a yellow bar, and the black and blue dots indicate, respectively, the accreting and the luminosity sources, which are assumed to be point-like. Finally, r₀, r₁ indicate the wind’s initial and final radius, respectively.