Real author:
from MetaStock by Rosh
Three normalized oscillators on one chart.
The formula for the calculation:
StoneAxe(bar) = 200 * ( Close[bar] - Lowest(bar, period) ) / ( Highest(bar, period) - Lowest(bar, period) ) - 100
This indicator was first implemented in MQL4 and published in the Code Base at mql4.com on 02.02.2008.

The StoneAxe_x3x indicator