Create Your Own Crop Marks

You can easily create crop marks around a graphic (to indicate where a graphic should be trimmed, for example). Just draw a rectangle that represents the crop area (don't worry about fill or stroke, they'll automatically change). With the rectangle selected, go to Object>Crop Area>Make. If you ever need to change the crop marks, use Object>Crop Area>Release and then edit the rectangle. (Note: The cropping object must be a non-rotated rectangle that is not being used as a clipping mask.)