What ⤏ means
Its meaning depends on the surrounding notation.
MathML marks it as infix (between expressions), “stretchy” and an “accent”: layout rules, not a universal reading like “implies.”
A 1999 MathML draft used dbkarow for a private-use code without shared meaning. A 2003 ISO entity list maps that name to ⤏, “right doubly broken arrow.”
Technical; the surrounding notation defines its role.
It does not mean “implies” by itself.
Don't confuse it with
1Questions 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 290F, 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 “rightwards triple dash arrow”.
Linux
Ctrl+Shift+UType 290f, then Enter or Space.
HTML
⤏CSS
\290FHTML
In HTML, `⤏` names ⤏ (HTML Living Standard, checked 2026-10-08).
Codes and encoding1 code points
HTML decimal
⤏
HTML hex
⤏
CSS content
content: "\290F";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A4%8F
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.