U+A678 COMBINING CYRILLIC LETTER HARD SIGN

The Unicode character U+A678, officially named COMBINING CYRILLIC LETTER HARD SIGN, was introduced in Unicode version 6.1. It is part of the Cyrillic Ext B block, which belongs to the Basic Multilingual plane.

Categorized technically as a Nonspacing Mark, this character typically falls under the Cyrillic 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 Unknown character. Its visual representation remains not mirrored regardless of the reading direction.