Ratio collar option

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,

View this message in context: http://n4.nabble.com/Ratio-collar-option-tp1676491p1676491.html
Sent from the Rmetrics mailing list archive at Nabble.com.