SID Name	Description	Rating
	316 ReturnVolatilit	Calculates the Annualized Return Volatiltiy of the Series. Takes 2 parameters: 1. Column (Open, High, Low or Close) 2. Period	Not Rated

The logic for this chart:

my ($volatility1)=ReturnVolatility(Close,30);
my ($volatility2)=ReturnVolatility(Close,90);

PlotSetScale(0,90);
PlotColumn($volatility1,Lorange);
PlotColumn($volatility2,Lgreen);