Are these trim or bleed lines? And How can I add them to a design?

So basically, I’ve made a set of playing cards for a client and he said the printer wants to add 3mm bleed lines to the cards like this .. However these don’t look like bleed lines to me?(the pink line) Aren’t bleeds on the outside of the image not inner? I’m guessing they’re trim lines.. I’ve been looking for tutorials everywhere on how to add them with no luck.

Answer

This is a cut line, most likely for the print to get die-cut. You can create this with a stroke and then setting it to a spot colour called something like ‘cutter’. The printer can then send this artwork to get a die made at the correct spec.

Attribution
Source : Link , Question Author : user3228347 , Answer Author : James C

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