There are several articles in the User Guide for the strategy structure: Indicator Slots

Reed this texts. If you have any comments or questions, you can use the disquisitions fields below the articles.

There are video lessons for every article.

It can be either of these cases depending on the presence of closing logic conditions.

See the article Closing Point of the Position. There are videos and examples there.

You can see also a textual explanation in the Overview:

Dear Miroslav

could you please email me or upload the above example of strategy here using Momentum as it is to help me to check? I mean without closing condition as yours. I cannot see any closing condition to yours.

I receive this  (I use every tick). The same behavior happened with ALF I used at the same way

In FSB I have many trades like You in MT4
In MT4 only ONE. But YOU HAVE A lot!!!

Maybe we have different files!!!  I do not know. Maybe Some parameter I do not use correctly.

Thanks for all explanation.

It was that

MT4 and MT5 works at the same way. This parameter is important for both platforms at the exactly same way.

In the same way as in the trading experts. There is no correct answer because MT4 is absolutely negligent when generates the bar data.
For example, if you trade on M5 chart on 24/5 forex market and you want to close you position at the end of the day. The correct solution would be to send a close order at 23:59:59, but not in the MT case.
If you send the order at that time, the broker's backend may lag and t execute the order on 00:00:15.
Also if the market is slow and there is no ticks, MT will cancel the order because there is no fresh price. What MT means by "fresh price" is questionable. It is different for every broker.

FSB tries to workaround this issue. It uses the "Bar closing advance" parameters. The default value is 15 seconds. It means that when there are 15 seconds left to the theoretical bar closing time, FSB (and EAs) wait for the first tick. When there is a tick in this time interval, the expert sends a close order. The EA also suspend further trading on that bar.

If you make  "Bar closing advance" lower, the EA will close the position more precisely and closer to Close price. However if there is no tick in that interval, the EA will not close the position. The close signal will be resend at the first tick f the next bar.

If you make  "Bar closing advance" higher (lets say 30 seconds), it will be more sure that the market will produce a tick in that interval. The drawback is that the closing will be less precise.

As a rule, you may increase the value if you trade on H1 and longer period. You may decrease the value if you trade on M1 chart and the market is fats. For example if you trade only on the London session on a volatile couple, you may decrease the value. If you close at midnight on H1 or daily chart, you may increase the value.

Dear Mriroslav

Relative to strategy testers what parameter value to use in EAs in order to find same results like FSB during testing?

I found that to receive enough same results in MT4 I need to use large values for this parameter i.e. 999.

Is it Normal? Is there a logic to that? Do I have some problem Or it is normal?

This situation does not happened in MT5. I have this problem only with MT4. MT5 tester works with 15.

The behavior depends a lot on this parameter in back testing. The other thing could happened is some problems on some indicators. Not all but some of them.

With the above results we have agreement.

And I just verified them to MT5 also.

The problem can be in the writing of some of the indicators.

I opened a ticked in the MT5 community for that case. MT4 Strategy Tester doesn't generate ticks near to the end of M5 bars

There is no solution so far.

In MT5 the things work better but in MT4, inside one bar trading gave me hard time

I will test it and answer you soon cause today things go wrong...

That is why I had problems with Advanced Time in some cases.
MT5 worked better but MT4 was a problem
I had to use big time to see same results, which of course was not normal.

I could not believe what I saw and finally you came to discover a big problem in MT4.

I hope to find time to think on it.

Real events look to be like that.

If we want to apply classic analysis then we have to use our own definition of bars.

MT4 and MT5 cannot make that...

The other way is to find a sophisticated approximation.

I cannot entirely fix it, but I can workaround it to make the backtest acceptable.
Actually, I'm ready and testing now the new script.

The idea is simple.
1. Normally the Bar Closing sends the close signal at the first tick XXX seconds before the theoretical end of a bar, where XXX is the number of seconds you set on EA Input form on startup.
2. When a new bar starts, the EA checks if the strategy uses Bar Closing (Day Closing, ....) and if there is an open position. If it is true, the EA proceeds with the closing procedure in the same way as if it was the last tick. We may think for it as sending the close order at Bar Open, if it was not executed on Bar Closing.
3. If a missed close order was executed at Bar Open, the expert checks if the strategy opens a position at Bar Open. If it is true, the EA checks if the position entry rules are satisfied and send the entry order at the same tick.

As a result of that changes, the EA sends a missed closing order at the Bar Open without missing the next entry. Other benefit is that we can reduce the closing time advance to 5-6 seconds for fast markets in order to improve the closing precision.

Now I'm testing it with closing time 1 sec on a demo and on backtest and it works fine.

It is possible to have a Gap between the Open and the Close price. However, if there were no ticks in the last seconds and the closing was not activated, it means that the market is very slow and an eventual gap will be minimal.