http://blogs.office.com/b/microsoft-publisher/archive/2011/02/09/what-are-crop-marks-and-why-would-you-want-to-print-them.aspxCrop marks, also known as trim marks, are lines printed in the corners of your publication's sheet or sheets of paper to show the printer where to trim the paper. They are used by commercial printers for creating bleeds where an image or color on theen-USTelligent Community 1.5.134.15456 (Build: 5.5.134.15456)