i been watch them on demo and still did not understand, how it work... you buy 100 shares XYZ, enter amount of money -let say 10. When and how order will be executed? from what point trailing will be calculated? you bought 100 @ $100, but when you submit order, price was 101. it will be calculated from $101? that mean, if price fell to 91 (or 90?)right away( on last? or bid? or ask?), then your order will became what? market order? main reason, why i ask this question is that on demo i always recieve price outside of bid/ask. if you buy, it always higher than ask! how it work in real trade? thank you!