The default value is 50.

Valid values are 0 to 20000.

Lines that have lengths greater than or equal to this value will be removed. Any line smaller than this value, will not be removed.

Note: This parameter is very sensitive to the image resolution and should generally be thought of in inches. If the value is set too low, this operation will begin to remove parts of characters. This value should be set larger than the width of text character because of this.

Reference