What ⦆ means
⦆ closes its matching opener ⦅. Together, they enclose a phrase in double parentheses, also called a double bracket.
A Japanese character standard, JIS X 0213, lists the pair in 2000 as a double parenthesis and double bracket.
Why does ⦆ look different in fonts?
Fonts may draw the pair joined or doubled. The outline can vary while the character remains ⦆.
NFKC text normalization maps ⦆ to ⦆, a mathematical closer used for ranges in Bourbaki notation. Avoid NFKC when the fullwidth form matters.
Neutral punctuation for East Asian layout and text processing.
Use ⦆ only to close the pair opened by ⦅.
Don't confuse it with
2Questions people ask
1Why 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 ⦆
⦆\FF60Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

