Strikethrough text
A̶ ̶l̶i̶n̶e̶ ̶t̶h̶r̶o̶u̶g̶h̶ every character.
Result
Why you would use this
A combining long stroke overlay (U+0336) is added after each character, so the strike travels with the text into places that allow no formatting at all. Rendering depends on the font — some platforms draw the stroke with gaps.