The study of line shape is part of a set of complementary disciplines for the analysis of spectra, such as the study of atomic kinetics or the study of the hydrodynamic evolution of the medium. In plasmas, the Stark broadening of spectral lines results from the interaction of the emitter’s internal degrees of freedom with the ionic and electronic micro-fields created by the plasma. Modeling this broadening is a complex problem involving a complex combination of atomic physics, statistical physics and plasma physics, the most challenging problem being to completely and correctly identify the emitter environment. In this context, a fast and accurate calculation code (PPP code) designed to synthesize spectral profiles for the interpretation of experiments for a very wide range of emitters and plasma conditions, was developed in the 1990s and regularly improved and updated. In this document, after an initial part devoted to theoretical background, examples and dumps of simple executions are used to show how the code works.