Here is a list of all namespaces with brief descriptions:

Naction_rr
Nargument_rr
Nconfig_rr
Ncounted_with_rr
Ndefault_rr
Ndefine_rr
Nentry_point_rr
Nevent_rr
Nevent_subscribe_2
Nevent_subscribe_rr
Nextend_mib_rr
Nfunction_rr
Nimport_rr
Ninclude_rr
Ninstance_add_rr
Nmib_rr
Nobject_rr
Nodl_rr
Nparameter_rr
Nparameter_set_rr
Npopulate_object_rr
Npopulate_rr
Nprint_rr
Nrequires_rr
Nresolver_rr
Nselect_rr
Nsynchronize_object_rr
Nsynchronize_parameter_rr
Nsynchronize_rr
Nuserflags_rr
Nvalue_rr