Just a warning, my book does not cover adjustments to credit spreads in any detail as that was not a focus of our book.
For a better understanding look to Cottle's book Option Trading: The Hidden Reality.
Also look at doing unbalanced or skip strike flys for a nete credit as a lower risk way to trade a range.
For a better understanding look to Cottle's book Option Trading: The Hidden Reality.
Also look at doing unbalanced or skip strike flys for a nete credit as a lower risk way to trade a range.