(3.2.11) Kaupp and Arbuznikov : Several contributions in this section indicate that accuracy depends on the type of property one looks at. While highly empirical DFAs have concentrated on relative energies relevant for chemical processes, a wide-ranging recent discussion has put electron densities into focus. Here, we should clearly distinguish different spatial regions in an atom, molecule or solid, as different requirements hold for the core, valence, asymptotic, and intermediate regions. For example, many (albeit not all!) empirical Minnesota functionals, which give excellent valence energies and probably reasonable valence densities, produce highly erratic hyperfine couplings for transition-metal nuclei and also perform poorly for NMR shifts and spin-spin coupling constants . A positiondependent admixture of Hartree-Fock exchange in local hybrid functionals seems to be one way to improve specifically properties of operators that act near the nuclei or far away from them -see contribution (4.1.10).