Zone
A zone highlights specific cells of each ActivityBar study on the chart by enclosing them in a box, the dimensions and location of which is specified by the specific ActivityBar study. For most ActivityBar studies, the zone is drawn around all the cells that fall between the open and close of the bar. However, the Price Distribution ActivityBar study draws the zone around the most frequently occurring price in the bar, one standard deviation above it and one standard deviation below it. You can change the number of standard deviations used to draw the zone.
For specifications on the zone in each study, refer to the description of the applicable ActivityBar study.