A regression line with the fitting error as a channel.
Narrow bands mean price hugs its own trend line; wide bands mean it is wandering around it.
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.
Gate: Price close is above Standard error bands middle.
The line is fitted to the window you chose. Change the window and the 'trend' changes with it.
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