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Hence the ASCII in the description.

Since accented characters are used in the English language it's not even 'English only'.

"printable ascii" describes everything that it is and everything that it isn't; no further clarification is needed.

I will spare us an answer because it wouldn't be printable English.

You are the only one who said "printable English". Everyone else has said "printable ASCII". Do you perhaps not understand what ASCII is?