U+2101 "℁" Addressed to the Subject Unicode Character
Unicode Version 17.0
℁
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.
General Properties
| Code Point | U+2101 |
| Version Added | 1.1 |
| Name | Addressed to the Subject |
| Block | Letterlike Symbols |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Decomposition Type | Compat |
| Decomposition Mapping | "a" U+0061 Latin Small Letter A "/" U+002F Solidus "s" U+0073 Latin Small Letter S |
Encodings
| HTML Decimal Encoding | ℁ |
| HTML Hex Encoding | ℁ |
| UTF-8 Encoding | 0xE2 0x84 0x81 |
| UTF-16 Encoding | 0x2101 |
| UTF-32 Encoding | 0x00002101 |
| C/C++/Java Escape | \u2101 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "a" U+0061 Latin Small Letter A "/" U+002F Solidus "s" U+0073 Latin Small Letter S |
| NFKC Simple Casefold | "a" U+0061 Latin Small Letter A "/" U+002F Solidus "s" U+0073 Latin Small Letter S |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |