I recently tried to use the find and replace tool to replace the # sign with the word TRAY. I quickly realized that AutoCAD uses # as a wildcard for any number, and it replaced all numbers in my drawing with the word TRAY.
While I find it kind of comical, and was oh so grateful for the UNDO button, I'm wondering how I can get AutoCAD to replace # with something else, and not view it as a wildcard.