Double Stochastic is use 2 Stochastic for monitoring price swing.
Slow Stochastic (21,3,3) for monitoring the swing of price cycle.
Fast Stochastic (5,1,1) for monitoring the swing in price ripple.
When 2 Stochastic run way from each other, separately , mean Price will move only retrace or rebound in ripple movement.
When 2 Stochastic Flip and Run break thru...
The Zone is mention in New Trading Dimensions by Bill Williams,PhD.
The Zone is used for Entry Signal
Green Zone are painting Green Bars when Awesome Oscillator (AO) and Accelerater/Decelerator (AC) are both increasing.
Red Zone are painting Red Bars when Awesome Oscillator (AO) and Accelerater/Decelerator (AC) are both decreasing.
Gray Zone are painting Gray...