Properties of the cluster termination surface for all simulated clusters. As a rule of thumb , a coefficient of inhomogeneity above 30 already implies significant asymmetry. Black markers show the standard cluster with 30 stars in a core radius of 2.5 pc, taken at different ages. Blue (resp. red) markers show additional simulations for 5 Myr old clusters hosting 30 (resp. 5) stars. Size tags refer to the core radius: 1.25 pc for “small”, 2.5 pc for “standard”, 5 pc for “large” and 10 pc for “very large”.