Top: macro-micro decomposition (MmD) applied to the spectra of images A & D averaged over period P1. The black solid line shows the fraction of the spectrum F_Mμ affected by microlensing, and the red solid line shows the emission F_M, which is too large to be microlensed. For comparison, we also display the observed spectrum of image D with a dotted-blue line and the power-law continuum of D with a dashed black line. Bottom: Fe ii+iii template from Vestergaard & Wilkes (2001) convolved with a Gaussian of FWHM = 2000 km s^-1.