HomeDiagramsClass diagramClass: Abstract Annotation

Class: Abstract Annotation

Using `<<abstract>>` annotation for abstract classes.

class-abstract-annotation.mmd
classDiagram
  class Shape {
    <<abstract>>
    +String color
    +area() double
    +draw() void
  }
Output
Class diagram, Zombie Mermaid <<abstract>> Shape + String color + area(): double + draw(): void

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