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Oh - no. Use the variable name for the tag not the name of the type. This is encouraged by usage of the idiom

ar & BOOST_SERIALIZATION_NVP(my_variable);

Might I also suggest a similar interface which allows the caller to specify the name to go with the value:

BOOST_SERIALIZATION_NAME_VALUE ("variable", m_variable);

The following already exists. make_nvp("variable", m_variable); The above macro was only created to avoid retyping the variable name in the Most common case. Robert Ramey