SATL (Slow Adaptive Trend Line) - the «slow» adaptive trend line is obtained using a digital low-pass filter of a different order.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/7381
FATL (Fast Adaptive Trend Line) - the «fast» adaptive trend line is calculated using a digital low-pass filter (cream-colored line on the chart).The optimized variant of the Kaufman's Adaptative Moving Average by wellx
Example of optimization using the "running total" method.