The icon of confirmation dialog uses English question mark, like the attached image confirmation-dialog.png.
But in Arabic and languages that use Arabic script such as Persian and Urdu, which are written from right to left, the question mark ؟ is mirrored right-to-left from the English question mark. So it's better to use a mirrored question mark in Arabic locales.
Hebrew and Yiddish are also written right-to-left, but they use a question mark that appears on the page in the same orientation as the Roman-alphabet question mark.

The other 2 attachments show the different icons for "Windows Help" in Hebrew and Arabic locale.