U+031D COMBINING UP TACK BELOW

The Unicode character U+031D, officially named COMBINING UP TACK BELOW, was introduced in Unicode version 1.1. It is part of the Diacriticals block, which belongs to the Basic Multilingual plane. Previously, it was also referred to as NON-SPACING UP TACK BELOW.

Categorized technically as a Nonspacing Mark, this character typically falls under the Zinh script. In terms of text layout and rendering, the glyph is not a composition and has ambiguous in East Asian typography. When placed in bidirectional text, it behaves as an Unknown character. Its visual representation remains not mirrored regardless of the reading direction.