Just in case you have an editor who still works on hard copy (I do occasionally so I can take a break from my computer), the chart below may help you decipher some of the symbols your editor scrawls in the margins.
This came my way via cyberspace, origin unknown. If you know who the creator is, please let me know.
Nomi Isak, Writing Coach 
I LOVE IT! 😂
Sent from my iPad
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Thanks for commenting, Catherine! Fun, huh.