In Some cases you may want to position the bullet's path above or below the line of sight at a given range.
To do so, click the word "Zeroed" in the Rng parameter. Enter a positive or negative value to position the bullet's path above or below the line of sight, respectively. When a value other than 0 is entered, that value is shown to the left of the Rng parameter. Otherwise, the word Zeroed is shown.
see Zeroed Rng