EDIT maatra chandrabindu (ँ) Used in few words, but an integral part of Hindi. E.g. angoor (grape(s)) written as अँगूर

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EDIT Anunaasika Used in Sanskrit, the anunaasika is a dot above a letter. It is used by the devanāgarī script to represent vowel nasalization. When the letter is romanized, the anunaasika usually becomes a tilde.

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