Macro-micro decomposition (MmD) applied to simulated spectra of HE 0435-1223 mimicking the observed data. The decomposition is similar to the one showed in Fig. 3. The bottom panel shows F_M for three different values of A and an arbitrary value of M. The best value of A is A ~ 1.2 because it leads to F_M = 0 in the continuum regions blueward and redward of the emission line. The upper panel shows the decomposition for 3 different values of M. The best value is M = 1.47 because it minimizes the emission in the line, keeping the flux above the apparent local continuum depicted as a dotted black line.