U+2553 "╓" Box Drawings down Double and Right Single Unicode Character

U+2553 "╓" Box Drawings down Double and Right Single is a graphic symbol from the Box Drawing block used to create visual borders and tables in text interfaces, specifically combining a double vertical line extending downward on the left side with a single horizontal line projecting to the right at the top. This character allows for the junction of thick (double) and thin (single) line segments in technical diagrams, forming a corner piece where a double-line continues vertically from above while a single-line begins horizontally to the right, often appearing in pseudographic representations of grid structures or legacy computer terminal displays.