A forward strip (fws) is simply a strip of Forward instruments.
Pricing a forward strip in SDX Commodities & Energy
When pricing a forward strip in SDX Commodities & Energy note the following:
By default for each underlying forward, the expiry dates and the settlement dates all are set according to the exchange dates. For a listed asset (i.e., an exchange traded asset), the exchange date used is the expiry date of the asset's exchange traded future.
You can then change the expiry frequency for all the strip using the Expiry Frequency dropdown list.
After you enter a forward strip, if necessary for each underlying forward you can then manually change its expiry dates and/or settlement dates.
You do this in the Expiry Dates & Rates window which is accessed by clicking the Expiry Dates & Rates button in the Single Option page or the Expiry Details button in the Portfolio page.
If you change the expiry date for an underlying forward manually, its settlement date is also automatically changed to match it.