U+E0040 "" Tag Commercial At Unicode Character
Unicode Version 17.0
U+E0040 "" Tag Commercial At is a seldom used code point belonging to the Tags block, which was originally designed for use in language tagging and data interchange, particularly within plain text contexts to identify the language of surrounding text. This specific character represents the "commercial at" symbol (@) in tag form, intended to be employed in a sequence of tag characters that together form a language tag. However, its practical application is extremely limited today, as modern standards like the Language Tags (BCP 47) in XML or HTML have largely superseded this mechanism, leaving U+E0040 as a relic of an earlier approach to metadata encoding.
General Properties
| Code Point | U+E0040 |
| Version Added | 3.1 |
| Name | Tag Commercial At |
| Block | Tags |
| General Category | Format |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Boundary Neutral |
Encodings
| HTML Decimal Encoding | 󠁀 |
| HTML Hex Encoding | 󠁀 |
| UTF-8 Encoding | 0xF3 0xA0 0x81 0x80 |
| UTF-16 Encoding | 0xDB40 0xDC40 |
| UTF-32 Encoding | 0x000E0040 |
| C/C++/Java Escape | \udb40\udc40 |