type t = {mutable symbol : string option;mutable exchange : string option;mutable client_order_id_1 : string option;mutable order_type_1 : Dtcprotocol_piqi.order_type_enum option;mutable buy_sell_1 : Dtcprotocol_piqi.buy_sell_enum option;mutable price1_1 : Dtcprotocol_piqi.protobuf_int64 option;mutable price2_1 : Dtcprotocol_piqi.protobuf_int64 option;mutable quantity_1 : Dtcprotocol_piqi.protobuf_int64 option;mutable client_order_id_2 : string option;mutable order_type_2 : Dtcprotocol_piqi.order_type_enum option;mutable buy_sell_2 : Dtcprotocol_piqi.buy_sell_enum option;mutable price1_2 : Dtcprotocol_piqi.protobuf_int64 option;mutable price2_2 : Dtcprotocol_piqi.protobuf_int64 option;mutable quantity_2 : Dtcprotocol_piqi.protobuf_int64 option;mutable time_in_force : Dtcprotocol_piqi.time_in_force_enum option;mutable good_till_date_time : Dtcprotocol_piqi.int64_fixed option;mutable trade_account : string option;mutable is_automated_order : bool option;mutable parent_trigger_client_order_id : string option;mutable free_form_text : string option;mutable divisor : Dtcprotocol_piqi.float32 option;mutable open_or_close : Dtcprotocol_piqi.open_close_trade_enum option;mutable partial_fill_handling : Dtcprotocol_piqi.partial_fill_handling_enum
option;}