- body : FIX::Message
- bufcapacity : xml_buffered_writer
- bufcapacitybytes : xml_buffered_writer
- group : FIX::message_order
- header : FIX::Message , FIX::message_order
- JULIAN_19700101 : FIX::DateTime
- MILLIS_PER_DAY : FIX::DateTime
- MILLIS_PER_HOUR : FIX::DateTime
- MILLIS_PER_MIN : FIX::DateTime
- MILLIS_PER_SEC : FIX::DateTime
- MINUTES_PER_HOUR : FIX::DateTime
- normal : FIX::message_order
- SECONDS_PER_DAY : FIX::DateTime
- SECONDS_PER_HOUR : FIX::DateTime
- SECONDS_PER_MIN : FIX::DateTime
- trailer : FIX::Message , FIX::message_order
- value : opt_false , opt_true