Don't know anything about misunderstandings, but the symbol in question is https://en.m.wikipedia.org/wiki/Looped_square https://en.m.wikipedia.org/wiki/Looped_

Don't know anything about misunderstandings, but the symbol in question is https://en.m.wikipedia.org/wiki/Looped_square https://en.m.wikipedia.org/wiki/Looped_square