HR diagram for evolutionary tracks in the mass range 0.30  ÷  1.10 M_⊙ for the labeled chemical composition ([α/Fe] = 0.0) and α_ml = 1.90. Effective temperatures are in K. Left panel: tracks from PMS up to the central hydrogen exhaustion (for masses up to 0.5 M_⊙) and tracks from PMS up to the helium flash (for masses 0.55M_⊙ ≤ M ≤ 1.10M_⊙). Right panel: HB models with a 0.80 M_⊙ progenitor, from the ZAHB to thermal pulses.