thanks for that but i guess i didn't explain myself clearly enough. just to take your pic as an example -- you've got it set to 5 d 15 min but zoomed in to a much shorter period. below is a shot of the full 5d 15min chart, and the difference between the two accum readings is pretty stark, with one nearly in oversold territory and the other not even close. hence my question about zoom levels and period length. i believe, according to the late deaf trader, that you're supposed to pick a time length and not zoom at all, but i dunno. have i made myself any clearer?