To see how files are handled by the scripts lapw1para and lapw2para refer to figures 5.1 and 5.2. After the end of lapw2 the densities and the informations from the case.scf2_x files are summarized by sumpara.
Note: parallel lapw2 and sumpara take two command line arguments, namely the case.def file but also a number_of_processor indicator.