Envelopes of evolutionary paths for M =7, 9, 15, 20, 25, 40 and 60 M_⊙ taking into account the predictions of the codes studied in this paper. Rotation is not included. The envelopes for the 7 and 9 M_⊙ models do not include FRANEC since no tracks is available for these masses. The Padova models do not exist for 40 and 60 M_⊙. For the 40 and 60 M_⊙ tracks, the envelope encompasses only the redward evolution (the Wolf-Rayet phases are not included).