Start with a small flow

Use short labels and a few nodes before expanding the diagram. Write the same process in nearby prose so readers still understand an unrendered file.

```mermaid
flowchart LR
  Draft --> Review
  Review --> Share
```

A diagram needs a supporting renderer

MarkThatDown’s listing includes diagrams. Supported diagram types and syntax depend on the bundled renderer. Check complex diagrams and export results before sharing.