**[MermaidJS](https://mermaidjs.github.io/)** was my favourite cool thing in 2018! But I can't find a way to draw MermaidJS `graph` or `sequenceDiagram` on Stack Overflow. I've seen many Markdown tools such as [StackEdit][1], [Typora][2], [Markdown Plus][3] and [Markdown Monster][4] support MermaidJS, and I feel a little bit restricted not having the luxury of this cool technology on Stack Exchange sites. Adding `<!-- language: mermaid-js -->` or triple back-ticks (```` ```mermaid````) didn't work so I assumed it is not supported. I think this would be very useful in asking design-related questions, or in explaining complex scenarios. So will it ever be supported? [1]: https://stackedit.io/app# [2]: https://typora.io/ [3]: https://mdp.tylingsoft.com/ [4]: https://markdownmonster.west-wind.com/