> What exactly does the underscore in _("Select your preferred
> mean?

It doesn't do anything. It's just a naming convention the author chose
to use. Usually when you name a function like that, it's meant to be
"private" or shouldn't be called directly. Other functions will use it,
but you shouldn't use it directly in your code. Of course, nothing is
stopping you from doing that though...

---John Holmes...

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