U+2359 APL FUNCTIONAL SYMBOL DELTA UNDERBAR

The Unicode character U+2359, officially named APL FUNCTIONAL SYMBOL DELTA UNDERBAR, was introduced in Unicode version 1.1. It is part of the Misc Technical block, which belongs to the Basic Multilingual plane.

Categorized technically as a Other Symbol, this character typically falls under the Common script. In terms of text layout and rendering, the glyph is not a composition and has no designated width in East Asian typography. When placed in bidirectional text, it behaves as an Left-To-Right character. Its visual representation remains not mirrored regardless of the reading direction.