U+237D "⍽" Shouldered Open Box Unicode Character
Unicode Version 17.0
⍽
U+237D "⍽" Shouldered Open Box is a graphic symbol used primarily in technical notation to represent a missing or unknown character, often in contexts where a placeholder is needed to indicate an absence of data or a printing gap. It features a rectangular shape with indentations on its sides, giving it a "shouldered" appearance, and is part of the Unicode block for miscellaneous technical symbols. This character is particularly associated with APL (A Programming Language), where it serves as a representation for empty numeric arrays or placeholders in array-based computations.
General Properties
| Code Point | U+237D |
| Version Added | 3.0 |
| Name | Shouldered Open Box |
| Block | Miscellaneous Technical |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⍽ |
| HTML Hex Encoding | ⍽ |
| UTF-8 Encoding | 0xE2 0x8D 0xBD |
| UTF-16 Encoding | 0x237D |
| UTF-32 Encoding | 0x0000237D |
| C/C++/Java Escape | \u237d |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |