Quadrant Upper Left and Upper Right and Lower Left

Quadrant Upper Left and Upper Right and Lower Left at U+259B is a Block Elements character that fills three quarters of a character cell, leaving only the lower-right quadrant blank. It is a printable layout symbol rather than punctuation or a letter, designed for building coarse graphics in monospaced text grids. Its main use is in terminal art, text-mode user interfaces, roguelike maps, and retro-style diagrams where a program needs partial-cell shading or blocky shapes without using images. Combined with neighboring quadrant characters, it can form pixel-art corners, thick diagonal-ish edges, progress indicators, or compact icons inside a fixed-width console. It also appears in plain-text mockups, BBS or demoscene-inspired artwork, and documentation that illustrates screen layouts using Unicode block elements. The important practical concern is alignment: the symbol works best in fonts where block elements occupy the full character cell evenly, while proportional fonts or mismatched terminal settings can make the intended shape look uneven.