StackEdit

[StackEdit](https://stackedit.io) is a full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.

https://stackedit.io

```mermaid sequenceDiagram Alice ->> Bob: Hello Bob, how are you? Bob-->>John: How about you John? Bob--x Alice: I am good thanks! Bob-x John: I am good thanks! Note right of John: Bob thinks a long
long time, so long
that the text does
not fit on a row.

Bob-->Alice: Checking with John... Alice->John: Yes... John, how are you? ```