::: cfsem.flux_density_linear_filament
::: cfsem.flux_density_linear_filament_hierarchical
::: cfsem.vector_potential_linear_filament
::: cfsem.vector_potential_linear_filament_hierarchical
::: cfsem.body_force_density_linear_filament
::: cfsem.filament_coil
::: cfsem.filament_helix_path
::: cfsem.rotate_filaments_about_path