Reply To: adding spine marks

OK, I am using CS 5 and indeed they add the crop (trim and bleed) automatically when you export it as long as those are ticked in the check box. When i create a cover/book jacket, i work out the sizes and then make this up as a one page document using 2 columns in the colume box and enter the spine width. This is all fine and dandy but it doesn't allow me to add printers marks to indicate where the spine is.

I am sure there is an ingenious way to do this!!