There is a lot of confusion about labeling indicators and how they differ from others. I am not as much interested in figuring out how they are exactly constructed but what aspect of price movement are they revealing and how I could use them to make my method a bit more honed to the market action. In this Pursuit I came across the True Strength Index in Prophet. After a while I discovered that TSI is very close to MACD except it is on an absolute 100 to -100 scale. Where MACD would not be useful for comparing different vehicles because the output is on the price scale TSI happens to be very useful because the values are normalized. Beside the divergences, etc. it is good for (minding of course if it is with or against the trend) establishing threshold values for entries/exits and determining extremes. If one, for example, set the tsi to 26, 12 - similar to the popular 12,26,9 MACD values, the output is almost identical except it is on -100/+100 scale.
Been using volume charts for a while, chose 2500 on the ES simply because I liked how it looked, not too fast, not too slow. 2401 looks nearly the same. I doubt there is any magic in odd # charts per se.