Solar spectrum (top panel) and a comparison of solar limb-darkening computations with solar measurements by Neckel & Labs (1994) (bottom panel). Stars in both panels depict the solar measurements, and lines represent computations. Measurements and computations of solar spectrum in the top panel are shown at the disk center. Spectra at selected view angles, namely the µ = 0.8, 0.6, 0.4, and 0.2, normalized to the solar spectrum at the disk center, are shown in the bottom panel. The different line types marked in the legend to the figure correspond to the computation with different approximations: RE, with convection (α = 1.25), and with convection and overshoots. Intensity is measured in [erg cm⁻³ s⁻¹ sr⁻¹].