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To: Chandler H. Everett who wrote (1567)	2/7/1998 4:45:00 PM
From: Craig DeHaan	Respond to of 4056

Chandler, I think you reinvented the Bollinger Band; albeit with differential upper/lower band deviation factors. As always, you perked my interest to experiment and in modifying the input variables for future adjustments I rewrote as: CHANBANDS - Periods:=Input("periods",3,89,4); LowerDev:=Input("lower deviation",1,2,1); UpperDev:=Input("upper deviation",1,2,1.5); SMA:= Mov(C,Periods,S); SD:= Sqrt(Var(C,Periods)); SMA-LowerDevSD; SMA+UpperDevSD; The resulting indicator(s) looked very familiar and when doing overlays I discovered they are identical to Bollinger. Try it and see. I never dissected his formula before. Thanks for the inadvertent lesson. Craig