To friedmango & ejr: In the new book by Prtice Headly "Big Trend in
Trading" published 2002 he states the Acceleration Bands formula
written in TradeStation EasyLanguage code as:

Upperband= Average((high x (1+2 x ((((high - low/((high + low)/2)) x
10000) x .001))) , 20)

Midpoint = Average (close , 20)

Lower band = Average ((low x (1-2 x (((high-low)/((high+low) / 2)) x
1000) x .001))) , 20)

ejr, don't know if what you have in the formula is the same as, but if
not, hoping you can come up with correct one as the bands seem to wide
to me also.
Thanks, Ed