What ﹨ means
Use a Unicode input method or an escape for your file type. The standard backslash key produces \, a different character. In HTML, use ﹨; in CSS, use \FE68; in JavaScript or JSON strings, use \uFE68.
A box or substitute mark may mean the current font lacks a glyph for ﹨; the intended text character remains the same.
What was this small form for?
It preserves a small-form backslash for legacy text interchange.
An archived EUC-TW mapping pairs it with position 0x2262 in CNS 11643, a character set for Chinese text. Unicode treats ﹨ as a small presentation of the ordinary reverse solidus, allowing text from older encodings to round-trip into Unicode. Its role is a compatibility form, not a separate programming or mathematical operation.
Can software change its shape?
Yes; NFKC can fold the small shape away.
NFKC is Unicode's compatibility-normalization form: it folds presentation variants into plainer equivalents. Here, it changes ﹨ to ordinary \. Avoid that pass when the small shape matters to your text.
Technical punctuation with no separate social tone; its small shape points to a text-format distinction.
Do not use it in code or paths where an ordinary backslash is expected.
Don't confuse it with
2Questions people ask
2Does ﹨ mean set minus?
No. Set difference uses the separate mathematical operator ∖; ﹨ is a small-form backslash.
Why did ﹨ turn into a regular backslash?
A compatibility-normalization pass can fold it into `\`. Preserve the original character where its small shape carries information.
How to type ﹨
﹨\FE68Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.