Just like all the other spaces and zero width characters[1], it's originally for typography and typesetting. It is used to create word boundaries so that text w

Just like all the other spaces and zero width characters[1], it's originally for typography and typesetting. It is used to create word boundaries so that text would break at the right places in paragraphs, but without creating the visible, well, space between words.[2] [1]: https://en.wikipedia.org/wiki/Whitespace_character#Unicode https://en.wikipedia.org/wiki/Whitespace_character#Unicode [2]: https://en.wikipedia.org/wiki/Zero-width_space https://en.wikipedia.org/wiki/Zero-width_space