Trim marks Vs. Crop marks

[romeggs]

Is there any difference between Trim marks and Crop marks?
How do I know when should I use one or the other?

 

[Eggles]

As far as I am aware, trim marks and crop marks mean the same thing i.e. where the paper is to be cut (or 'trimmed' or 'cropped') after printing.

 

[dimoj]

If you create Crop Marks on your page and then for example do a 'save for web' only the area within the Crop Marks will be exported. Same for making a Tiff or PSD or whatever. Trim Marks simply print on the page.