Here is a list of all namespaces with brief descriptions:

[detail level 1234]

Npybind11
Ndetail
Nsen
Ndb
Npython
Ntest
Ndetail
Ngen
Ndetail
Nimpl
Ntest
Nkernel	Strong type for the unique identifier for a transport timer
Ncrash	Crash reporting, which belongs to the process rather than to any one kernel: a process has one crash reporter however many kernels it builds
Nlang
Nfom
Nstd_util
Ndetail
Nimpl
Ntest
Ncrash_report
Nruntime
Ntype_clash
Nutil
Nimpl
Nspdlog
Nlevel
Nstd	STL namespace