Stochastics are a group of functions used in the area of statistics and probabilities. Their main function here is to measure the current price in relation to its relative position within the averaging period chosen.
To apply a Stochastic function to a graph:

NOTICE
The colours of the indicators can be set to any colour within the STI dialog box. This is achieved by clicking on the Colour button. A Colour dialog box is displayed. Choose your colour and then click <OK>.