Impact of different overshoot parameters on the surface [X/Fe] ratios after a PIE in a 1 M_⊙, [Fe/H] = −2.5 AGB model. Shown are the effect of including overshooting at the top of the convective pulse (panel a), at the bottom of the convective pulse (panel b), at the bottom of the convective envelope (panel c), when varying the parameters p (with f_top = 0.02 and f_top = 0.04, panel d), and D_min with f_top = 0.02 (panel e), and f_top = 0.04 (panel f). The bottom subplots report the difference between a given model and the first model in the list.