I don't think so. Just think of it as the codes we normally use in real life, as we never use O's in codes. It'll always be the number 0. Hope this helps.
Viewing post in Looking for help or tips?
Well, unfortunately, I don't think I can help with that much, unless somebody else knows how to change those kinds of things. All I can really say is try to remember that it is the number, and never the letter. And later on, when you can make an Omega Kerfur, you can just have them do that duty for you.