Here is a list of all documented namespace variables with links to the namespaces they belong to:

• nullopt : etl
• scheduler_policy_sequencial_multiple : etl
• singleton_base< T >::m_self : etl
• unaligned_type< T, Endian_ >::Endian : etl
• unaligned_type_ext< T, Endian_ >::Endian : etl