The Data Horizon is a tool, used to define (limit) the time span for the marked data used for backtestesting.

Minimum data bars - will always be set at 300 bars. Some indicators require at least so many bars to start drawing their line.

Maximum data bars – this value can vary between 300 and 200 000. This setting does not change the data files. The program will load the file's data and filter the bars using the settings below.

Start Date – Change this option to select date where the backtesting data should start. There must be a minimum of 300 bars between the Start and the End Date.

End Date – The limit at the end of the period you selected.