If you have the EA's indicators available in FSB you can easily set the strategy. There are more than 150 indicators for FSB that covers most of the standard cases. A programmer can make custom indicators for FSB for all possible price actions. The only limitation is that the FSB's indicators do not have access to the account and the positions. This is intentional by design. FSB solves the main problem for a trader - the psychological load on managing open positions. You know that the trading decisions and the correct situation evaluation can be seriously violated if we have a position with a moderate profit or loss. To prevent such distortion, FSB is designed to take trading decisions using information only from the market. For example, if you have a strategy that opens a long position when the market was oversold and RSI recovers from below 20. You can easily make such strategy in FSB. However, you may decide to open long only if your current position is not loosing more than $300. You can make it in MT but not in FSB. Why? Because the result of your current position has a zero effect on the new long position.  Why we have to loose the opportunity from the new entry because our previous entry (even from different strategy) was on loss.

FSB allows you to set strategies with a redefined and 100% logically correct structure. There is no such limitation in MT. For example you can make "strange" logic in MT (and all EA builders) that opens a position when RSI becomes greater than the sum of MACD + current hour. You cannot do such things in FSB without a special custom indicator.

No you cannot. the MetaEditor allows you programming in MQL, which is fully functional programming language now. You can program a text editor or a Tetris game in  MQL. On the other hand, FSB allows you to create only trading strategies.

It is important to understand that there is no limitations for the future development and expanding of FSB. We can do "everything" that can be done with programming on a computer. The only factor is the common sense, the time and the price. For example, we can provide a programming editor for entering code, but what is the point. We have MT, NinjaTrader, cAlgo and probably other platforms that allow programming. Why do we have to make another one.

FSB is different than MT and is developed with different purpose. If you want all the possibilities, you can use programming in MT or in NinjaTrader. If you want logically correct strategies, fast and reliable backtest and no programming, FSB is the correct tool.

Hi Popov and Dave

Thank you for the detailed and helpful replies.- it will be helpful to programmers who may want to transition to FSB for the fast and accurate backtesting (possibly using very large historical data sets); as well as all the additional FSB functionality vs. MetaEditor & MetaTrader.

Perhaps in the future it may be possible to for FSB's fast backtesting 'engine' to run Metatrader coded EAs (without any code changes) much faster and better than Metatrader - even if you can access no/or little other FSB functionality when doing this.
I realize I may be displaying my non-programmer lack of understanding with this suggestion, but what the heck - "nothing ventured, nothing gained..."

Your excellent support  is as always much appreciated, thank you.