PARSEC evolutionary tracks of Z = 0.014 (to represent the solar metallicity) from the phase of Beginning of PMS (t=0, blue stars) to Point B (red crosses), up to an initial mass of 12 M_⊙. The gray lines are the evolutionary tracks, and the symbols indicate the critical phases along the track defined by Bressan et al. (2012). All the points of Begin MS are connected by a dashed line to represent the ZAMS.