Many years ago I adopted the personal convention of using a slash for the number zero and a little curly cue at the top of the capital letter O. By using both i

Many years ago I adopted the personal convention of using a slash for the number zero and a little curly cue at the top of the capital letter O. By using both in my handwriting where they could be confused, I was free to use just an unadorned letter or digit in situations where context made it clear. [1] Like the capital O found in the google font: https://fonts.google.com/specimen/Cedarville+Cursive?category=Handwriting&preview.text=big%20O&preview.text_type=custom https://fonts.google.com/specimen/Cedarville+Cursive?categor...