What means
It supplies one stroke of a large letter or number.
For HP terminal headlines, the HP 2640 and 2620 used a dedicated character ROM (read-only memory chip) for oversized lettering. A technical article in Hewlett-Packard Journal describes the optional set in 1979; a terminal manual from 1980 shows it in use.
Unicode preserves these pieces for legacy text conversion, terminal emulators, and text-mode displays. This character’s reading depends on its place in the larger letter or numeral.
Why can it look blank?
Your font may not include its glyph.
Cascadia Code added all 55 large-type pieces in release 2404.03 (2024); a font without this glyph may show a box instead.
Don't confuse it with
4Questions 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
𜹋\1CE4BCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.
