Evolution of core radii (solid and dashed curves) r_c for representative computed clusters without a gas expulsion phase (“PB” indicates inclusion of primordial binaries). Like the half-mass radii, the computed values of r_c, starting from the filament-like compact initial conditions (see above), substantially fall short of the observed core radii of LMC and SMC clusters (filled circles). The latter data are obtained from Mackey & Gilmore (2003a,b); here, the relevant data are extracted from Fig. 1 of Mackey et al. (2008) using the standalone DEXTER service (http://dc.zah.uni-heidelberg.de/sdexter).