↨
Arrow 25
- Unicode
- U+21A8
- Category
- Arrows
- HTML Entity
- ↨
- CSS
- \21A8
The ↨ (Up Down Arrow With Base) symbol features a vertical line with arrowheads at both ends, anchored by a horizontal baseline. Originating from early computing character sets like MS-DOS code page 437, it was commonly used in text-based user interfaces to indicate scrollable content or vertical dimensions. Today, it remains useful in technical documentation and digital typography to represent height measurements, baselines, or bidirectional movement.
How to Type
- Windows
- Alt+23 or Alt+8616
- macOS
- Control+Command+Space then search "Up Down Arrow With Base"
- Linux
- Ctrl+Shift+U then 21A8
- HTML
- ↨
In Programming
In legacy programming and terminal applications, it often serves as a visual cue for scrollable vertical menus or fixed limits. It is also used in plain-text diagrams to denote physical height or bounded dimensions.
Tags
MS-DOS
arrow
bar
bidirectional
code page 437
direction
height
scroll
text UI
unicode arrows
up down
vertical