usually the tape at a crime scene would say something like 'do not cross - police line'. Caution tape is usually just for a dangerous area, like a constuction site or a weak landing.
I know you didn't copy. Sorry I just realized that after I posted this. I didn't know they used chalk (I'm very ignorant) and posted that because it looked like a picture in my forensic scientist/biology teacher's classroom. Now I know why :)
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