Use "zero line" in a sentence

1. If two consecutive bars of the histogram are formed above the zero line, the break of the highest high of the corresponding bar position with the second such column of the AC histogram will be considered a buy signal. A sell signal – similarly, but with the AC histogram in this case below the zero line.

Im Buch wird das Material bezüglich der Auffassung von extremen, neutralen und gerichteten Kerzen (Bars) wiederholt.