Function direction_label 

fn direction_label(direction: Direction) -> &'static str

cashflow_records, with a Conversion for each non-deliverable leg (by position; a missing or None entry is a deliverable leg). A converted row reports its amount in the leg’s own currency, discount_factor as the conversion’s factor, pv in the settlement currency, and the two settlement columns; every other row leaves those columns empty. A leg’s side as the direction column spells it.