Flow chart of the SOS Cep&RRL pipeline that is common to both Cepheid and RR Lyrae star processing. Boxes on the left-hand side show different modules of this general trunk, their outputs are indicated within rhombs on the right-hand side. Blue arrows connect modules activated for the processing of Gaia DR1 data, their names are highlighted in bold-face. We have marked in light grey modules not operational for the Gaia DR1 processing and their connections to the rest of the pipeline.