the grid expert is very famous on the next its not easy to explain here , but the one I posted has so many advanced features like trading in the dircetion of the trend , like trading the break or close and open the grid or define the trade difrection and many many more features

most of those features are explained in the code
however I said I trade it on EURUSD and USDCHF thats because there is a corrolaiton between those pairs

normally the grid expert will be stuck with a flaoting order so if that happen you should know how to close that order in proift eventhough its a losing order

to do that you need to understand corolation very well
for example if I
placce aBUY EURUSD and buyUSDCHF
it is as if I have hedged the dollar
with the pips value difference and the daily range difference that work to be like a perfect hegde however in this case most of the time if you left this trade long enough no matter what you will end up in profit

this is a long subject and someone needs to read about it to understand it

the expert is uesless if you don't know it works becuse at some point you need to place some orders manually , so if you plan to use it as stand a lone expert it will not work