1. Preprocessing tools# 1.1. Presentation 1.2. Dependencies 1.3. Building the environnement 1.4. Readers for input data 1.5. Build CROCO grid 1.6. Build CROCO initial and boundary conditions 1.7. Build CROCO tidal forcing 1.8. Build CROCO river forcing 1.9. Build a nest 1.10. Download some datasets