New Directions in Pseudoatom-Based X-Ray Charge Density Analysis.- Reliable Measurements of Dipole Moments from Single-Crystal Diffraction Data and Assessment of an In-Crystal Enhancement.- Challenging Problems in Charge Density Determination: Polar Bonds and Influence of the Environment.- Electron Density in Quantum Theory.- Residual Density Analysis.- The Source Function Descriptor as a Tool to Extract Chemical Information from Theoretical and Experimental Electron Densities.