Diagrams
It is possible to add mermaid diagrams using the {mermaid} directive, for example:
```{mermaid} flowchart LR A[Jupyter Notebook] --> C B[MyST Markdown] --> C C(mystjs) --> D{AST} D <--> E[LaTeX] E --> F[PDF] D --> G[Word] D --> H[React] D --> I[HTML] D <--> J[JATS] ```
