Rotational velocity at the terminal age main-sequence (TAMS) as a function of initial mass. Every dot represents one evolutionary sequence. The colours refer to the initial rotational velocity; dots of model sequences with the same initial rotational velocity are connected and labelled (units in km s^-1). Only those sequences that have reached Y_C = 0.98 have been plotted. (See also Fig. 4 which shows the rotational velocity at the ZAMS: here the same models are connected as in Fig. 4.) Core-hydrogen-burning cool supergiants (SG) are marked with large red stars, chemically-homogeneous TWUIN stars (Y) are marked with small blue stars.