Error-barred Black Square Symbol
The ⧯ symbol (U+29EF) is an error-barred black square used to indicate an error or invalid result.
U+29EF
⧯ is a math-style symbol known as the error-barred black square. It’s useful when you want to visually mark an error, failure, or invalid state in technical text. This page provides copy/paste options and standard Unicode escapes.
Error-barred Black Square Symbol Meaning
The “error-barred black square” (⧯, Unicode U+29EF) is a compact glyph typically used to signal that something is wrong, invalid, or has failed a check. The “black square” styling communicates a strong status marker, while the barred/error look suggests an error condition rather than a normal value. In practice, you’ll see it in technical writing, documentation, diagram annotations, or simple UI text to represent an error state without using letters like “ERR.” It can also appear in math or engineering contexts as a symbolic placeholder to distinguish valid results from erroneous ones, especially in plain-text environments where icons may not render.
Common uses
- •Labeling an error or invalid result in plain text reports
- •Marking failed test cases in documentation or checklists
- •Annotating diagrams to indicate an incorrect or rejected step
- •Indicating missing/invalid data in technical notes
- •Using as a generic “error” marker in lightweight UI messages
Examples
⧯ Error-Barred Black Square
- ⧯Computation status: ⧯ (invalid input).
- ⧯Test #12: ⧯ error during validation.
- ⧯Result rejected ⧯ due to out-of-range value.
- ⧯Step 3 failed ⧯; please retry with correct parameters.
- ⧯No match found ⧯ in the provided dataset.
Variations
Ready to copy
Technical codes
| Unicode | U+29EF | |
| HTML Entity | ⧯ | |
| HTML Code | ⧯ | |
| CSS | \29EF |
FAQ
What is the Unicode for ⧯?
The symbol ⧯ is Unicode U+29EF.
How can I copy ⧯ into HTML?
Use the HTML entity: ⧯ (for ⧯).
What are the CSS and JavaScript escape sequences?
CSS escape: \\29EF. JavaScript (Unicode code point escape): \\u{29EF}.
What does the symbol usually indicate?
It commonly indicates an error condition, invalid result, or rejected/failed state in technical/plain-text contexts.