U+E0031 "" Tag Digit One Unicode Character
Unicode Version 17.0
U+E0031 "" Tag Digit One is part of the Tags block, a special set of invisible formatting characters used primarily for language tagging in plain text, as specified by Unicode's legacy tag mechanism. This character represents the digit "1" in a coded tag sequence, but unlike standard digits, it is not intended for visible display; instead, it forms part of a hidden string of tag characters that can be processed by software to convey metadata, such as indicating a specific language or script for the surrounding text. Because of its invisible nature and limited practical use in modern systems, it is rarely encountered in everyday text and is mainly a relic of older text encoding practices.
General Properties
| Code Point | U+E0031 |
| Version Added | 3.1 |
| Name | Tag Digit One |
| 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 0x80 0xB1 |
| UTF-16 Encoding | 0xDB40 0xDC31 |
| UTF-32 Encoding | 0x000E0031 |
| C/C++/Java Escape | \udb40\udc31 |