Comic Geeks To My Aid

I was rewatching titans e5 and I noticed that dick has, like, identical short notches? Or cuts? on both of his shoulders. I was wondering if there was a specific robin injury in the comics that would correspond with these since they’re kinda weird scars. Help me out people who have read stuff written before 2000!

Looks like defensive wounds to me. The fact that they’re uniform makes me think they probably happened while Batman was training him since you’d start out with attacks from the same directions when first teaching someone to fight. That way their body learns to react before they think about it.