It's a different symbol than the sharp, and I don't blame anyone for not knowing it's rarely used for that purpose these days.
I had a web design professor who said its "true" name was octothorpe, and while various sources confirm that, I've never heard anyone else call it that. Another student in the same class once called it the "tic tac toe symbol."
I had a web design professor who said its "true" name was octothorpe, and while various sources confirm that, I've never heard anyone else call it that. Another student in the same class once called it the "tic tac toe symbol."