Assumed nucleosynthetic over- or underabundances α_X for the α-elements X (S, Si, Mg, and Ti) and Mn with respect to [Zn/Fe] and metallicity [M/H], The solid green curve shows the Milky Way, the solid purple curve shows the LMC as adopted from de Boer et al. (2014), and the dashed purple curve shows the LMC with a constant over- or underabundance plateau. For the plateau of the α -elements, we used as reference α_s = 0.25.