[R-SIG-Finance] Ratio collar option

[Megh]

My query is not directly R related rather on finance. Hopefully folks here
would give some solution. I would like to ask what is the "Ratio collar
option". I know about the Collar option and if I search over net on Ratio
collar option all the time it refers to Collar option only. Are they both
same? Why the term "Ratio" there?

Any view will be highly appreciated.

Thanks,
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