U+2101 "℁" Addressed to the Subject Unicode Character

U+2101 "℁" Addressed to the Subject is a typographic symbol known as the "Addressed to the Subject" sign, which historically appeared in letter-writing and formal correspondence to indicate the person or entity for whom a document was intended. It belongs to the Letterlike Symbols block and is classified as an alphabetic presentation form, though it is rarely used in modern digital text. The character resembles a printed "a" with a line through its bowl, serving a purpose similar to the more common "℀" (Account of) or "℅" (Care of) symbols in specialized address formatting.