What means
It fills three of the eight squares in a screen tile.
The 1983 Kaypro 10 User’s Guide describes a two-column by four-row grid in each character cell and explains how to use its squares to draw on screen. Unicode’s mapping ties this exact pattern to Kaypro’s reverse set, byte 9F; its digits label the filled squares.
Don't confuse it with
4Questions people ask
1Why does show as a box?
If a box appears, your font or terminal may lack the glyph. As of 2026, emulator tests found uneven support for this Unicode supplement: some tested terminals drew octants, while others displayed none of its characters.
How to type
Windows (Word)
Alt+XType 1CDBB, 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 “block octant-578”.
Linux
Ctrl+Shift+UType 1cdbb, then Enter or Space.
HTML
𜶻CSS
\1CDBBCodes and encoding1 code points
HTML decimal
𜶻
HTML hex
𜶻
CSS content
content: "\1CDBB";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9C%B6%BB
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.