HRD of the nonrotating model (solid lines) and the model rotating at V/V_c = 0.4 (dashed lines) at Z = 0.014 (solar) and Z = 0.006 (LMC). The top, middle, and bottom rows show models with initial masses of 180, 250, and 300 M_⊙, respectively. The tracks are color-coded according to their mass-loss rates. The beginning and the end of the burning phases are indicated by circles and crosses, respectively. The beginning of the Wolf-Rayet phase is indicated by a light blue circle.