Up-Down Arrow ↕
Copy & Meaning

A vertical double-headed arrow — representing bidirectional vertical movement, vertical scaling, and flexibility to move both up and down. This arrow indicates that something can expand or contract vertically, scroll up or down, or covers the full vertical range. In interface design, it appears on resize handles for vertical dimension adjustment.

'Up and down' as a concept describes volatility, flexibility, and the full range of vertical movement possibilities. Used for vertical scroll indication, vertical resize controls, bidirectional movement capability, the full range of possible values in a vertical scale, and any context where both upward and downward directions are simultaneously relevant.