Inverted question and exclamation marks - Wikipedia
https://en.wikipedia.org/wiki/Inverted_question_and_exclamation_marks
The inverted question mark, ¿, and inverted exclamation mark, ¡, are punctuation marks used to begin interrogative and exclamatory sentences or clauses in Spanish and some languages which have cultural ties with Spain, such as Asturian and Waray languages. The initial marks are mirrored at the end of the sentence or clause by the 'ordinary' question mar… See more
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