1. Core Manuals Manuals 1. What is a Toolbox We present the concept of toolbox in Feel++, the set of available toolboxes and how to use them from the command line. 2. Modeling and Analysis using the JSON files We present the JSON files used to configure the physical models and the analysis. 3. Parametrized Simulations using CFG files We present here the use of CFG files that allow to configure the command line or options associated to a simulation.