Flat Extrap Moneyness
Key Flat Extrap Moneyness in Vol Curve refers to an optional Boolean that determines what level of moneyness must be assumed when the spot price leads to moneyness values not contained in the table Vol Table
Needed only if Moneyness = true
If FALSE, no extrapolation is assumed, i.e. the assumed moneyness equals the actual moneyness and may thus reach any conceivable value.
If TRUE, flat extrapolation is assumed, i.e. the assumed moneyness is bounded by the extreme moneyness levels present in the table Vol Table
If omitted, default is TRUE