Gives the mesh on which the full charge density, the ELF, or the Hartree potential has to be calculated. The mesh can be given by the three vectors R1, R2, and R3 or on a sphere in which case the radius (RMIN and RMAX), the angle theta (TMIN and TMAX in the range from 0 to 180 degrees), and the angle phi (PMIN and PMAX in the range from 0 to 360 degrees) has to be given.