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