Typical fits of synthetic Mg and K line profiles (solid blue lines) to those in the observed GIRAFFE spectrum (filled red circles) of the target TO star 47Tuc45982 (T_eff = 5707 K, log g = 4.00). We also provide the abundances determined from each observed line, A(X), together with their errors (see Sec. 2.3.4). Thin gray lines show synthetic line profiles computed with the abundances altered by ±0.2 dex.