OpenVDB  5.2.0
Namespace List
Here is a list of all namespaces with brief descriptions:
[detail level 12345]
 Nopenvdb
 Nv5_2
 Ncompression
 Nio
 Nlogging
 Ninternal
 Nmath
 Ninternal
 Nmat3_internal
 Npcg
 Ninternal
 Npoints
 Nattribute_traits
 NfutureA container for ABI=5 to help ease introduction of upcoming features
 Nindex
 Nindex_filter_internal
 Ninternal
 Npoint_advect_internal
 Npoint_attribute_internal
 Npoint_conversion_internal
 Npoint_delete_internal
 Npoint_group_internal
 Npoint_mask_internal
 Npoint_move_internal
 Npoint_sample_internal
 Npoint_scatter_internal
 Ntools
 Nactivation
 Nclip_internal
 Ncomposite
 Ndiagnostics_internal
 Nds
 Nfilter_internal
 Ngridop
 Ninternal
 Nlevel_set_fracture_internal
 Nlevel_set_util_internal
 Nlocal_util
 Nlstrack
 Nmask_internal
 Nmesh_to_volume_internal
 Np2ls_internal
 Nparticle_atlas_internal
 Npoint_index_grid_internal
 Npoint_partitioner_internal
 Npoisson
 Ninternal
 Npotential_flow_internal
 NScheme
 Nstats_internal
 Nttls_internal
 Nv2s_internal
 Nvalxform
 Nvolume_to_mesh_internal
 Ntree
 Ninternal
 Niter
 Nleafmgr
 Nutil
 Npyopenvdb
 Ntbb