U+10377 COMBINING OLD PERMIC LETTER DOI

The Unicode character U+10377, officially named COMBINING OLD PERMIC LETTER DOI, was introduced in Unicode version 7.0. It is part of the Old Permic block, which belongs to the Supplementary Multilingual plane.

Categorized technically as a Nonspacing Mark, this character typically falls under the Perm 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.