Alternatively you can make PDFs and specify crop marks then.
Or you could make your pages 10 x 10 mm oversize and add guides on the
masters - with printable crop marks if you need them - to define your type
area.
k
Dave
http://xchange.studio.adobe.com/default.asp
Scripts came with InDesign 1.5x. In the \Adobe Technical Info\Scripting folder are eleven working scripts to do various effects. There are also other sample scripts not from Adobe.
• CropMarks: Draws crop marks and/or registration marks around a selected object.