U+25A7 "▧" Square with Upper Left to Lower Right Fill Unicode Character

U+25A7 "▧" Square with Upper Left to Lower Right Fill is a geometric symbol that depicts a square with its upper left corner filled and its lower right corner filled, or equivalently, with shading applied diagonally from the upper left to the lower right. It belongs to the Geometric Shapes Unicode block and is often used in technical diagrams, computer interface design, or text-based graphics to represent partial shading, directional fills, or visual state indicators. Its symmetrical counterpart, U+25A6, features the opposite diagonal pattern.