Mermaid is a pseudo-code way of generating diagrams quickly without worrying about pixel-positioning that traditional drag and drop diagram creation requires. It lets you take pseudo code like this:
sequenceDiagram Terry -->> Jody : Hello() Jody -->> Terry: returns "hello yourself""
And auto-generate a diagram like this:
Mermaid handles a huge number of diagram types:
- Sequence Diagrams
- Flowchart Diagrams
- Class Diagrams
- State Diagrams
- … and so much more – check out the Mermaid site for more details.