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⦏

left square bracket with tick in bottom corner

Left Square Bracket with Tick in Bottom Corner

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The lbrksld math bracket ⦏ is a left square delimiter with a short slash-like tick at its lower corner. It appears in technical math markup as an opening fence; the notation using it supplies the meaning of what it encloses.

Text symbol

What ⦏ means

It marks the opening edge of a bracketed expression.

The short stroke belongs to the bracket itself; it is not a separate operation. MathML’s 1998 character table lists lbrksld among mathematical delimiters as “left bracket, solidus bottom corner.” That entry used E29D in the private-use area; Unicode 3.2 assigned the dedicated character ⦏ in 2002. In HTML5, use ⦏; with unicode-math, enter \lbracklltick.

Don't confuse it with

2

Questions people ask

1

Why does ⦏ show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

How to type or find ⦏

Search it as
lbrksld · ticked square bracket · math delimiter · solidus bracket
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 298F, then AltX to get ⦏.
Windows
⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).
macOS
⌃Control+⌘Command+␣SpaceOpen the character viewer and search “left square bracket with tick in bottom corner”.
Linux
⎈Ctrl+⇧Shift+UType 298f, then Enter or Space.
HTML
⦏
CSS
\298F
HTML5
To type ⦏ in HTML5, use the named character reference ⦏.
LaTeX (unicode-math)
With unicode-math, enter \lbracklltick in a Unicode math setup.
Codes and encoding1 code points
HTML decimal
⦏
HTML hex
⦏
CSS content
content: "\298F";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A6%8F
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

2

Maths & numbers1,835 symbols

Shapes & colours597 symbols