drcha, you are correct. He does discuss them briefly, late in the book, when discussing trading volatility. He does not discuss it when he presents Variable Ratio Write, which is surprising as he usually does tell you when a strategy has a substitute which can be more efficient.
Are there significant differences between the two that I am missing?

Thanks. I understood Variable to refer to the varying strike prices as opposed to a Ratio Write where all the Calls are the same strike price.
But I think I understand your point, that a VRW is more easily adjustable to maintain neutrality, is that correct?
