Block: Box Drawing

Range U+2500 - U+257F
Official Chart
Wikipedia Box-drawing characters, also known as line-drawing characters, are a form of semigraphics widely used in text user interfaces to draw various geometric frames and boxes.
Box-drawing characters typically only work well with monospaced fonts.
In graphical user interfaces, these characters are much less useful as it is more simple and appropriate to draw lines and rectangles directly with graphical APIs.