Box Drawings Heavy Vertical

The Box Drawings Heavy Vertical at U+2503 is a thick vertical line segment used to build text-mode borders, dividers, and diagrams. It belongs to the Box Drawing block, a set of printable layout symbols designed for constructing rectangular frames and simple line art in monospaced text. Its most common use is in terminal interfaces, console dashboards, command-line menus, and text user interfaces where a strong vertical boundary is needed. For example, a file manager, installer, or status panel may use ┃ as the left and right edge of a highlighted box or as a heavy separator between columns. It also appears in plain-text diagrams, README files, roguelike game maps, and retro-style typography when authors want heavier emphasis than the light vertical line. It is meant to align with neighboring box-drawing characters in monospaced fonts, but mixed fonts or proportional display can make the line joints look uneven.