I do not know who introduces mini-option. kind of non-sense. Ib's option trader dialogue is kind of messy. mixed with min-option with normal option. why the programmer just put min-option in a seperated different row? I bet noone is interested in min-option! normal option is already just one of 10th,100th of the orginal underlying, everyone can afford to trade! I strongly suggest IB's option trader need adjusted. the min-option/normal option to be seperated, so majority option traders will quickly find their want to trade Normal options! if mixed together, easily pick the wrong option, waste time and commision fee.