Evolution from spherical initial condition with α = 1, and N = 10⁵: top left: the fraction of particles with positive energy f₊ (full black line) and the gravitational radius R_g (dotted red line) in units of the initial sphere radius R₀; top right: the flatness ratio ι₈₀ for the 80% most bounded particles; bottom left: the total angular momentum L_T (full black line) with respect to the initial centre of mass, the angular momentum of the centre of mass of the bound particles (red dashed line) and the angular momentum of the bound particles (blue dashed-dotted line) with respect to their centre of mass (all in units of L₀ defined in Eq. (6)); bottom right: the spin parameter λ.