_SECTION_BEGIN("Hist Vol");
/* Historical Volatility */
Period1=20;
Period2=252;
Volatility1 = StDev(log(C/Ref(C,-1)),Period1)*sqrt(365/7)*100;
Volatility2 = StDev(log(C/Ref(C,-1)),Period2)*sqrt(365/7)*100;
Plot(Volatility1,"\n"+"Volatility1 [ "+WriteVal(period1,1)+"
Period ]",colorRed,styleLine);
Plot(Volatility2,"\n"+"Volatility2 [ "+WriteVal(period2,1)+"
Period ]",colorBlue,styleLine);
_SECTION_END();