Type: String

Contains the persistence of the bet inserted by the user from the Back betting frame.
The Back betting frame is available to the user only if the xml property "show_input_back" of the strategy tag is equal to "y". The Back betting frame is opened when the user clicks on a cell of the "Back" column. The persistence specifies the behaviour of the bet when the events goes in play. It can be: lapse, persist, market_on_close.