Crop marks can be added and managed individually or as a set, and are always anchored to pages. On the Output tab in the Preferences dialog box, you can choose to shift the crop marks with page shingling, and print additional crop marks for the bleed margins. On the Marks tab, you can also set an optional white knockout. 

Length

Type a length for the crop marks.
Note: Set the default length on the Marks tab in the Preferences dialog box.

Offset from page

Type the distance from the page trim corners to place the crop marks. This number can be negative.
Note: Set the default distance on the Marks tab in the Preferences dialog box.

Style

Select the line type (solid, dotted, or dashed).

Place crop marks on outside of imposition

Select this check box to automatically prevent placement of any crop marks that would be inside the imposition, such as in the gutters between the pages.

Bring to Front

Prints the mark on top of any other content

• If Bring to Front is selected or cleared in the same way for both marks, then the crop mark will print over a color bar.
• If only one of the two overlapping marks is selected, then that mark will print on top.

Note: Except for JDF and PJTF output types, all output types support printing crop marks on top of duplicating marks.