Upper-Right and Lower-Left Quadrant Block

It fills two opposite quarters of one text cell. Use ▞ in terminal graphics as a small tile: place it beside other partial blocks to build a shape, chart, separator, or piece of pixel art. Its diagonal is the drawing; the surrounding tiles show how it fits into the larger design.

In 1998, Frank da Cruz proposed additions for terminal emulation, debugging, and interoperability. The proposal says these graphic characters rarely appeared on ordinary key labels; terminals usually displayed them after switching to a special character set. The quarter-square forms drew on Heath/Zenith, Wyse, and Televideo terminal sets; ▞ was reportedly added for completeness because those sets lacked that exact orientation. The set was accepted in 2000 and published in Unicode 3.2 (2002).

Why does ▞ look uneven in a grid?

Its usefulness depends on the font and cell alignment. A missing glyph means the active font or application has not supplied one. A visible but lopsided glyph may have proportions, spacing, or a baseline that do not match neighboring blocks.

For a grid, use a monospaced setting and check that neighboring cells share the same width and baseline. One tile may look odd alone, while a row of aligned tiles can form a solid shape.