Electron scattering is a very useful method for investigating nuclear structure. Since the electromagnetic interaction is fully known, the only unknowns in the description of the reaction are the nuclear (transition) charge and current densities, which can be determined by analyzing the experimental data. These densities can then be compared to those calculated by some nuclear model in order to test the model wave functions. As model wave functions are often used in some other part of nuclear physics (for instance, to describe proton or pion scattering) it is of importance to know if they are at least consistent with electron-scattering results, if available. This can be done by calculating the transition densities from the wave functions and comparing them to those extracted from the (e,e’) results, if the latter are available. Otherwise the densities can be used to calculate the (e,e’) cross sections (or form factors) and then these can be compared to the measured data.