User talk:2602:306:B8E6:B260:9F9:A361:B48B:80B0

Hi--I don't usually do this, so forgive me if I've got it wrong. The stub page for Ground of Artes says that it's the book that introduced the equals sign. However, the fuller page for Whetstone of Wittes also says it introduced the equals signs, and most sources credit Whetstone. If this is mentioned elsewhere, sorry--and let me know where, so I can change my own notes. I'm not making the change, just pointing it out.