lapw2 uses the file case.vector and computes the Fermi-energy and the expansions of the electronic charge densities in a representation according to eqn. 2.9 for each occupied state and each k-vector; then the corresponding (partial) charges are obtained by integration. The partial charges for each state (energy eigenvalue) and each k-vector are written to files case.help31, case.help32 etc., where the last digit gives the atomic index of inequivalent atoms. In addition ``Pulay-corrections`` to the forces at the nuclei are calculated here. For systems without inversion symmetry you have to use the program lapw2c (in connection with lapw1c).