U+257E "╾" Box Drawings Heavy Left and Light Right Unicode Character

U+257E "╾" Box Drawings Heavy Left and Light Right is a visual symbol used in terminal interfaces and plain text diagrams to create borders or frames where a thick vertical or horizontal line on the left meets a thin line on the right, allowing for precise control over the weight of box edges in character-based graphics. It belongs to the Box Drawing block, which provides a set of single and double line segments for constructing tables, flowcharts, and other structural layouts without relying on graphical fonts. This specific character contrasts a heavy, bold line on its left side with a light, regular line on its right, making it useful for blending or transitioning between thick and thin borders in a unified design.