What ▴ means
It marks a small upward cue; context sets its role.
In a layout, the triangle marker can label a heading or point upward; its position and nearby words tell you which role it has.
Printers used ornaments to decorate pages or mark divisions; later typefaces used dingbats—small decorative or indicating signs. Standardized geometric characters are part of that broader typographic toolkit.
A compact typographic mark; its direction and role come from the surrounding layout.
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 ▴
Windows (Word)
Alt+XType 25B4, 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 “black up-pointing small triangle”.
Linux
Ctrl+Shift+UType 25b4, then Enter or Space.
HTML
▴CSS
\25B4Codes and encoding1 code points
HTML decimal
▴
HTML hex
▴
CSS content
content: "\25B4";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%96%B4
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.