Example of the AGN spectral modeling for the case of HE 0433−1028. The modeled wavelength range is limited to the rest-frame wavelength range 4750 Å–5100 Å covering the prominent Hβ and [O III] λλ4960, 5007 emission lines. The spectrum with the full best-fit model and various line components for the BLR and the narrow and core component for the NLR of Hβ and [O III] are individually shown with different line styles and colors. The residual spectrum and the 5 σ limiting band are shown in the lower panel.