U+23AF "⎯" Horizontal Line Extension Unicode Character

U+23AF "⎯" Horizontal Line Extension is a typographic symbol classified as a graphic character within the Miscellaneous Technical block, designed specifically to extend or lengthen horizontal lines, such as those used in box-drawing or form layouts. It is distinct from a standard hyphen or em dash, as it represents a continuous, extendable line segment that can be repeated to create a longer visual bar without gaps. In plain text environments, it is often employed to simulate or replace the appearance of a long horizontal rule, though its display width and style depend heavily on the font and rendering engine used.