[hermitdev]

Surprisingly, in my experience, most people pick up on it with no explanation. Ive only had to explain it to a handful of people and to each, once. My handwriting is awful and has only gotten worse due to nuerigical issues. I look at my writing from my college notebooks versus current, and comparatively, my college writing is legible and I'm now producing chicken scratch that only I can decipher.

[JadeNB]

Sure! I agree that, if I saw your O side-by-side-with your 0, or even your 0 by itself, I would instantly understand. My point is just that, if I saw your O by itself and hadn't seen any of your handwriting before, I wouldn't know "aha, this is an O because it doesn't have a distinguishing mark", since I wouldn't know that your 0 does have a distinguishing mark.