V_HWHM(5007) vs. M(5007) for 0.696 M_⊙ sequences (α = 2) with the AGB mass-loss rates (top) and AGB wind velocities (bottom) varied, as indicated in the legends. In the top panel V_agb = 15 km s^-1 holds in all cases, whereas we have always Ṁ_agb = 1  ×  10^-4 M_⊙ yr^-1 in the bottom panel. Our standard 0.696 M_⊙ sequence with Ṁ_agb = 1  ×  10^-4 M_⊙ yr^-1 and V_agb = 15 km s^-1 serves in both panels as a reference (solid lines). Evolution proceeds always from low to high velocities.