U+FE3D "︽" Presentation Form for Vertical Left Double Angle Bracket Unicode Character

U+FE3D "︽" Presentation Form for Vertical Left Double Angle Bracket is a compatibility ideographic punctuation mark used in East Asian typography, specifically designed for vertical text layout. It represents the left half of a double angle bracket, which in horizontal writing is typically rendered as "《", but when text is oriented vertically, this form is used to ensure the bracket opens correctly toward the top of the column. This character is part of the CJK Compatibility Forms block and is intended for applications where precise vertical typesetting is required, helping to maintain proper reading order and visual consistency in traditional Chinese, Japanese, and Korean scripts.