2.6. Code structure (+)

2.6.1. Base

2.6.2. Fluids

2.6.3. Grid

2.6.4. Multigrid

2.6.5. AMR

2.6.6. IO & visualization

2.6.7. Scheme

2.6.8. Problems

2.6.9. Additional / specific physics

2.6.9.1. Magnetic & resistivity

2.6.9.2. Gravity

2.6.9.3. Cosmic rays

2.6.9.4. Interactions

2.6.9.5. Shear, supernovae

2.6.10. OpenCL

2.6.11. Utils