Letters behave differently to digits. The key V needs the right Alt to give @.

But for me, this is too far. I only use the Czech keyboard for the accented characters and switch to the English one to get at-signs, curly or angle brackets, etc. In fact, when programming, I almost never switch to the Czech keyboard.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

Interesting, I'd never heard of Alt combos to emit characters. But it makes sense - "alternate" characters... probably why it's there in the first place?

I was greatly disappointed when I learned that you can't buy foreign keyboards to have them emit unicode, even now in the USB era, and that it's always software that needs configured to match the text on the keys. But I guess you also just showed me why maybe people prefer that :-) you can switch on the fly.

Well, not surprising, my dad had a typewriter° without "1". You had to type "l0" for "10".

Of course was the font chosen to be closer.

We still have this kind of ambiguities on our keyboards, like using a single quote for apostrophe (or vice versa)

°) after some searching, it must have been the iconic Olivetti Lettera 22 or one of the successors like Olivetti Lettera 32. I still remember the turquoise case with the black stripe in the middle.