In typesetting, a term used to specify the leading to be used in combination with a certain point size. For example, "10 on 12" means that 10-point type should be set with two extra points of leading between each line.
In typesetting, a term used to specify the leading to be used in combination with a certain point size. For example, "10 on 12" means that 10-point type should be set with two extra points of leading between each line.