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# True Range

## [True Range](/function/technical-analysis.md#true-range)

<mark style="color:red;">`tr(`</mark>[<mark style="color:blue;">`candles`</mark>](/function/functions/candles.md)<mark style="color:red;">`: List[[`</mark>[<mark style="color:blue;">`Candle`</mark>](/function/structures.md#candle)<mark style="color:red;">`]]) -> List[Decimal]`</mark>