Bound mass fraction evolution of clusters corresponding to the Plummer model (upper left panel) and the Dehnen (γ = 0, 1, 2 as indicated in legends) models during the first 150 Myr after instantaneous gas expulsion. The lines are color-coded by the corresponding SFEs as in the key. SFE₁₀ has been used for the Plummer clusters, while SFE_J for the Dehnen clusters, respectively. The adopted end of violent relaxation t_VR = 20 Myr is indicated by the vertical black line.