# ---

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/---
> Markdown URL: https://mediated.wiki/source/---.md
> Source: https://en.wikipedia.org/wiki/---
> Source revision: 1354777172
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**---**, a string of three [hyphen-minus](/source/Hyphen-minus) characters, may refer to:

- [Em dash](/source/Em_dash) (—) (as an [approximation](/source/Dash#Approximating_the_em_dash_with_two_or_three_hyphens), or e.g. in [TeX](/source/TeX) syntax)
- [Horizontal rule](/source/Horizontal_rule) ([thematic break](/source/Thematic_break_(formatting))) in some markup languages (e.g. [Markdown](/source/Markdown))
- Document separator in [YAML](/source/YAML)
- '[O](/source/O)' letter in [Morse code](/source/Morse_code)

## See also

- [-- (disambiguation)](/source/--_(disambiguation))

---
Adapted from the Wikipedia article [---](https://en.wikipedia.org/wiki/---) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/---?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.