Thou shalt have no other gods before the ANSI C standard 1555

... not to mention plain text in various languages other than English.

And another that uses the lowercase o for the number 0, and one that used lowercase L for the number 1, and then combinations thereof... And a bunch of other oddities too once you get to the weirder fonts.

(Actually, I've run into computer fonts where 'l' and '1' were pixel-for-pixel similar in certain sizes. And likewise for 0 and O. Some of those have even been default fonts for command windows on things...)

Try the German-style (what's the "real" name for those in English again... I keep thinking 'Fraktur', does that ring a bell?) typefaces for more of that.

Around here, we learn to expect such in comprehensive school already. Well, at least I remember being taught that.

Oh, and everything comes with a language switch as everyone bundles all the minority-language stuff in one package ... changing language and-or character encoding settings on various things is a common prank. (And having word processors default to correct-as-you-type in some foreign language like English isn't always fun either. Closely related languages are even worse, though, being harder to notice...)

-- #Not speaking for my employer. No warranty. YMMV.