Subroutine and Hexagon Shapes
Subroutine, double circle, and hexagon — three specialty shapes for a predefined process, a double terminal, or a preparation step, beyond the five most common ones in Original Node Shapes.
subroutine-and-hexagon-shapes.mmd
graph LR
A[[Subroutine]] --> B(((Double Circle)))
B --> C{{Hexagon}}