Price change times volume, smoothed.
Big move on big volume equals a big force. Elder used a short period (2) for entries and a long one (13) for the trend.
Worked out by the same code the builder uses, on stored daily candles. Move a setting and the line moves with it. This is what happened, not what will happen.
Entry: Force index(13) crosses above 0.
One enormous volume spike can dominate the line for days.
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