What means
It forms one curved corner of a text drawing.
The European Sharp MZ and Robotron Z9001 character sets used it as a graphic cell on home computers in the 1970s and 1980s.
Why does this symbol show as a box?
Fonts decide whether the curve appears and how it looks.
Unicode's reference shape is not binding; fonts can differ. Without a supporting font, an app may show a box or blank.
GNU Unifont added the glyph in September 2024; the app still needs to use a font that contains it.
Don't confuse it with
1Combination ideas
1Designed: make a circle outline from four quarter arcs in a monospaced 2×2 grid.
Questions 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
Windows (Word)
Alt+XType 1CC36, then Alt+X 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 “upper right quarter circle”.
Linux
Ctrl+Shift+UType 1cc36, then Enter or Space.
HTML
𜰶CSS
\1CC36Codes and encoding1 code points
HTML decimal
𜰶
HTML hex
𜰶
CSS content
content: "\1CC36";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9C%B0%B6
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.