The Enclosed Alphanumeric Supplement is a Unicode block that contains Latin alphabet characters and Arabic numerals enclosed in circles, ovals, or boxes, used for various purposes such as emoji country flag support and compatibility with Broadcast Markup Language standards. This block is an extension of the Enclosed Alphanumerics block and is encoded in the range U+1F100–U+1F1FF in the Supplementary Multilingual Plane. It includes 41 emoji and several multiple-letter enclosed abbreviations.
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