| PercentageOfCallCurrencyAmount | Premium is quoted as a percentage of the callCurrencyAmount. |
| PercentageOfPutCurrencyAmount | Premium is quoted as a percentage of the putCurrencyAmount. |
| CallCurrencyPerPutCurrency | Premium is quoted in the call currency as a percentage of the put currency. |
| PutCurrencyPerCallCurrency | Premium is quoted in the put currency as a percentage of the call currency. |
| Explicit | Premium is quoted as an explicit amount. |