Wait, no - I think there's a prior reply:
"The Greek alphabet (upper case) was pretty much standardized in the Alexandrian period (3rd cent. BC) and remains the same today. The lower case developed gradually over time from cursive script, and wasn't standardized until the middle ages. "
Is this it?
I'm sorry for these questions, but there's so little time to research this issue properly. I am also worried about the mis-use of language, for philosophical, economic and social reasons, of course.