graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;

gantt
 title Example Gantt diagram
    dateFormat  YYYY-MM-DD
    section Team 1
    Research & requirements :done, a1, 2020-03-08, 2020-04-10
    Review & documentation : after a1, 20d
    section Team 2
    Implementation      :crit, active, 2020-03-25  , 20d
    Testing      :crit, 20d

flowchart TB
    c1-->a2
    subgraph one
    a1-->a2
    end
    subgraph two
    b1-->b2
    end
    subgraph three
    c1-->c2
    end

flowchart LR
%% this is a comment A -- text --> B{node}
   A -- text --> B -- text2 --> C

flowchart LR
    id1(Start)-->id2(Stop)
    style id1 fill:#f9f,stroke:#333,stroke-width:4px
    style id2 fill:#bbf,stroke:#f66,stroke-width:2px,color:#fff,stroke-dasharray: 5 5

flowchart LR
    A[Hard edge] -->|Link text| B(Round edge)
    B --> C{Decision}
    C -->|One| D[Result one]
    C -->|Two| E[Result two]

mindmap
  root((mindmap))
    Origins
      Long history
      ::icon(fa fa-book)
      Popularisation
        British popular psychology author Tony Buzan
    Research
      On effectiveness<br/>and features
      On Automatic creation
        Uses
            Creative techniques
            Strategic planning
            Argument mapping
    Tools
      Pen and paper
      Mermaid

zenuml
    title Demo
    Alice->John: Hello John, how are you?
    John->Alice: Great!
    Alice->John: See you later!