PARSEC v1.2S isochrones of [M/H] = 0.0 and ages from log(age/yr) = 6.6−10.1 complete from pre-main sequence to white dwarf stages, or up to the carbon-ignition in the case of massive stars. Upper left: Hertzsprung-Russell diagram log L/L_⊙ vs. log T_eff diagram; upper right: Kiel diagram log g vs. log T_eff; lower left: CMD in Bessell JK; lower right: CMD in Gaia DR2 filters. The “library type” we assign to different libraries are −2 for COMARCS C star library, −1 for COMARCS M/S star library, 0 for PHOENIX library, 1 for ATLAS9 or ATLAS12 library, 2 for WM-basic library with Ṁ = 10⁻⁷ M_⊙ yr⁻¹, 3 for WM-basic library with Ṁ = 10⁻⁶ M_⊙ yr⁻¹, 4 for WM-basic library with Ṁ = 10⁻⁵ M_⊙ yr⁻¹, 5 for PoWR WNL and WNE libraries, 6 for PoWR WC library, and 10 for Koester WD library. If a star is interpolated between different libraries, an intermediate number is assigned. However, in the future these numeric labels might be changed if more libraries are implemented or the interpolation scheme is changed.