U+25AE "▮" Black Vertical Rectangle Unicode Character

U+25AE "▮" Black Vertical Rectangle is a geometric symbol representing a solid, upright rectangular block, typically rendered in black or the current text color. It belongs to the Geometric Shapes block and is often used in text-based interfaces and typography to create visual separators, indicate a filled or active state, or serve as a simple graphical element in diagrams and user interface mockups. Its design can vary slightly between different typefaces but generally maintains a taller height than width, distinguishing it from the square-shaped full block character.