I am new to ZoneWeb and have few basic questions:

(1) When I select/scroll over any P&F cloumn and check the high and low values on the top left corner, I find that low value of column is not showing correctly i.e. low value of column is being shown with one box higher value (when compared with the right side price scale). High Value of column seems ok. Pls clarify (Query is also attached as an image)

(2) Is there any basic help tool of zone web to start with.

(3) What does the green circular symbol on bottom left corner denote