Put it in the «DataFolder»\MQL4\Indicators folder, compile it with the editor, and open it using the terminal.
Data Structure in MetaTrader 4 Build 600 and Higher - MQL4 Articles 2014.02.03
Data Structure in MetaTrader 4 Build 600 and Higher - MQL4 Articles 2014.02.03
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i downloaded a free indicator but the file is not opening
any guide please