OPEN-SOURCE SCRIPT

SMA 20/50/200 + BB

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Combines three widely used simple moving averages (20, 50, and 200 periods) in a single chart overlay. Optional 20-period Bollinger Bands with a 2.0 standard-deviation multiplier can be enabled in the indicator settings.

Default colors:
- Purple: SMA 20
- Orange: SMA 50
- Green: SMA 200
- Blue: Bollinger Bands

This indicator is designed as a clean visual reference for trend direction, moving-average structure, and volatility. It does not generate entry or exit signals.

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