-Add Swap SpreadsInstructs the wizard to add an additional optional column with the swap spreads in the swap rate table constructed as default input to Set
Note this key is prefixed by -, which indicates it is not regarded as part of the object's data.
It appears only in the wizard to help the user with the data entry task.
It is never shown in the object's contents or in the pasted spreadsheet range.
It is also never part of the exported object's data.
In the case where the object is part of another parent object, the value shown here can be ignored as it may not be at synch with the object's contained data.