mmd
What is a .mmd file?
text/vnd.mermaid
An MMD file holds a Mermaid diagram written as text (diagrams-as-code): a concise syntax that describes flowcharts, sequence, class, and other diagrams which a renderer turns into an image. It is widely embedded in Markdown and documentation.
How to use a .mmd file
Use an example Mermaid file to test diagram rendering, Markdown pipelines that embed Mermaid, and diagram-to-image conversion.