ios Node1 ios     Node4 DBfmt   + DBfmt() Node1->Node4 Node5 DBline - m_default - m_file - m_stream - m_data - m_backup - m_pos - m_line - m_fail - m_empty - m_extraction - m_base - m_dbfmt_hex - m_dbfmt_oct - m_dbfmt_dec + DBline() + DBline() + DBline() + connect() + connect() + token() + token() + token() + go_until() + empty() and 23 more... - reset_data() - reset_status() - reset() - GoodExtraction() - BadExtraction() - erase_comment() - GetToken() - GetLine() - GetValue() - GetValue() - check_quote() - GetStr() - check_data() Node1->Node5 Node2 std::basic_ios< Char >     Node2->Node1 Node3 std::ios_base     Node3->Node2