Unicode is full of whole blocks of weird sets of lines and borders. As far as I’...

kchr · on April 30, 2020

Those "weird" characters has been used for ASCII and ANSI based text-mode user interfaces since the dawn of UI as a concept.

buckminster · on April 30, 2020

Being pedantic, those box drawing characters are neither ASCII nor ANSI. They are part of the original IBM PC character sets. Windows refers to them as the OEM character sets.

ken · on April 30, 2020

Unicode’s box drawing seems to go way beyond ANSI, though, and PETscii was only added very recently (IIRC).