Zoom on the wavelength range 2100 <  λ <  5100 of the type 1 AGN stack obtained over the redshift range 0.3 <  z <  0.5 with the emission line from Vanden Berk et al. (2001) marked. For comparison, we show the SDSS DR5 spectral templates of the QSO (DR5 29) and of the luminous QSO (DR5 32) (Adelman-McCarthy et al. 2007). Emission line features are more marked (higher equivalent widths) in the SPIDERS templates. Vertical displacement between spectra are added for clarity.