trader places a stop order and buys the index at the a up. a stop loss would be set below the low value of the or (b-exit) so that if the market moved against him more than this amount once in the trade, he would get out. best to keep his money to trade another day. assuming the trade continued in his direction, if he were a day trader, he would exit the trade near the end of the day.
a c down occurs if the a up signal is generated but then the index trades down below the opening range. using the lower limit of the or (b-exit), the trader 