Using new resonance results, we investigate the relation between the charge and spin ordering features seen by a.o. neutron scattering and ARPES, and the NMR/NQR signal intensities (wipe-out effects), relaxation rates and line shapes in hole doped La ₂ NiO ₄, La ₂ CuO ₄, Bi ₂ Sr ₂ CaCu ₂ O ₈ and electron doped NdCeCuO ₄. We indicate what is understood and which questions are still open, with especially a focus on the observation that the wipe out effects happen in both hole and electron doped systems and continue down to the lowest measured temperatures. The latter feature might be the signature of a glassy dynamics of an entirely new kind, associated with the special nature of stripe order.