U+FE11 "︑" Presentation Form for Vertical Ideographic Comma Unicode Character

U+FE11 "︑" Presentation Form for Vertical Ideographic Comma is a specialized typographic glyph used primarily in East Asian vertical text layouts, where it serves as the vertical counterpart to the standard ideographic comma (U+3001). In horizontal writing, the regular ideographic comma appears at the bottom right of a character, but when text is rotated or set in vertical columns, this presentation form ensures the comma is correctly positioned, appearing at the upper right corner of the preceding character's space to maintain proper visual flow and alignment. It is part of the Unicode Vertical Forms block, allowing consistent rendering in contexts such as traditional Chinese, Japanese, and Korean scripts where vertical writing remains common in print or formal documents.