U+0340 COMBINING GRAVE TONE MARK

The Unicode character U+0340, officially named COMBINING GRAVE TONE MARK, 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 GRAVE TONE MARK.

Categorized technically as a Nonspacing Mark, this character typically falls under the Zinh script. In terms of text layout and rendering, the glyph is a canonical 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.