Normal moving average with some extra features.
It is useful for traders that look for the 20, 50, 100 and 200 days moving averages, this way they can see it without having to change the time frame. Also, a gap was added between periods to easily identify when a new one started.
Here's an example of a 20 day exponential moving average, applied to the close of the day with shift +1.
The Acceleration/Deceleration Indicator (AC) measures acceleration and deceleration of the current driving force.Average Directional Movement Index (ADX)
The Average Directional Movement Index Indicator (ADX) helps to determine if there is a price trend.