The answer is true when a new bar opens. Otherwise, it is false.
Very helpful when the trader wants to perform some actions at the open of a new bar.
Data
Symbol (optional)
The symbol from what you want to know if a new bar just opens.
If not specified, the chart symbol is used.
Time Frame (required)
The time frame of the bar. If Current is selected, the time frame of the chart in which the Expert Advisor runs is used.