In prepress, a short, thin line added to original copy, a negative, or a flat to indicate the center of the trim margin of a page. A centerline is also used for registration purposes. Also known as a center mark.
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In prepress, a short, thin line added to original copy, a negative, or a flat to indicate the center of the trim margin of a page. A centerline is also used for registration purposes. Also known as a center mark.