Defines the terms required to compute and settle a cash settlement amount according to a fixing value, including the fixing source, fixing method and fixing date. In FpML, PhysicalSettlementTerms and CashSettlementTerms extend SettlementTerms. In the CDM, this extension paradigm has not been used because SettlementTerms class has been used for purposes related to securities transactions, while it is not used as such in the FpML standard (i.e. only as an abstract construct.