Trim marks can be used as a guide when printing and cutting with a X-ACTO knife. Here I have a visual for applying the trim marks. Lets work on it
1. I have created a big black circle of same size like in the figure above. See the picture below both are same. Guides are recommended to use.
2. Next, click on to FILTER > CREATE > TRIM MARKS.
3. Now, you could see trim marks if you delete the black box that you have created just before. That’s it if you look at the corner you could see that marks.