Schematic diagram of the specific internal angular momentum j of a model as a function of radius coordinate r, illustrating the angular momentum loss prescriptions corresponding to Eqs. (1) and (2). The width of the hatched area indicates the radius range that contains the material that is removed from the model within one timestep, where R₂ corresponds to the stellar surface of the considered model, and R₁ marks the layer that becomes the stellar surface after the next timestep. The prescription implemented in the Brott models removes the angular momentum represented by the hatched area. The new prescription removes the angular momentum in the hatched plus the shaded area.