Cased (meaning) [closed]

Question

Perhaps, it might seem like an language question, I thought asking here would be OK.

In this link, it says that "Return a copy of the string with all the cased characters [4] converted to lowercase."

What does "cased" mean in this sentence? Is the word "case" a verb in the sentence above? No meaning of the verb "case" fits in the context.

Many thanks in advance.

Answer 1

Didn't you click the [4] to see what the footnote says?

[4] (1, 2, 3, 4) Cased characters are those with general category property being one of “Lu” (Letter, uppercase), “Ll” (Letter, lowercase), or “Lt” (Letter, titlecase).

Answer 2

If you follow the [4] link, you'll see that

Cased characters are those with general category property being one of “Lu” (Letter, uppercase), “Ll” (Letter, lowercase), or “Lt” (Letter, titlecase).

Basically, characters that have a case. 1 doesn't, but a and A do.