Lowest

What it does

Returns the minimum of the source across the lookback window (including the current bar).

What happens

Recomputed once per candle from its wired source, incrementally (constant work per bar). It emits no value until the warmup period has passed; after that it produces a value every bar.

When to use

Support breaks, channel bottoms, and trailing stops.

Gotchas

• Includes the current bar — account for that in breakout logic.