[Mn/Fe] vs. [Fe/H] in the solar vicinity. Open black squares are data from Sobeck et al. (2006), blue stars are from Reddy et al. (2003), and red open dots are thin-disc data from Feltzing et al. (2007). Top panel: thin lines are for massive star yields from Woosley & Weaver (1995), thick lines enhanced their Mn yields by 25 per cent. Red lines are for case M_Ch, blue lines for case sub-M_Ch, and case mix are the purple lines. Bottom panel: dashed thick blue line is for case sub-M_Ch+2002cx, dashed thick red line is for case M_Ch +. Thin blue and red lines are as in the top panel.