• UML：统一建模语言
• plantuml：第三方插件工具
• plantuml 官网：https://plantuml.com/zh/
• plantuml 中文文档：https://ceshiren.com/t/topic/4530
• plantuml 在线绘图地址：https://plantuml.ceshiren.com/

@startuml
Alice -> Bob: Hi Bob
Bob --> Alice: Hi Alice

Alice -> Bob: how are you？
Alice <-- Bob: Fine，thanks.
@enduml

@startuml
Alice -> Bob: Hi Bob
Bob --> Alice: Hi Alice

Alice -> Bob: how are you？
Alice <-- Bob: Fine，thanks.
@enduml

• 声明对象：actor database
• 消息数字序号：autonumber
• 消息分组：alt/else/end

@startuml
left to right direction
skinparam packageStyle rectangle
actor customer
actor clerk
rectangle checkout {
  customer -- (checkout) 
  (checkout) .> (payment) : include 
  (help) .> (checkout) : extends
  (checkout) -- clerk
}
@enduml

@startuml
left to right direction
skinparam packageStyle rectangle
actor customer
actor clerk
rectangle checkout {
  customer -- (checkout) 
  (checkout) .> (payment) : include 
  (help) .> (checkout) : extends
  (checkout) -- clerk
}
@enduml

@startuml

start
repeat
  :read data;
  :generate diagrams;
repeat while (more data?)
stop

@enduml

@startuml

start
repeat
  :read data;
  :generate diagrams;
repeat while (more data?)
stop

@enduml

@startmindmap
* 根节点
    * 第一级子节点 1
        * 第二级子节点 1
        * 第二级子节点 2
    * 第一级子节点 2
@endmindmap

@startmindmap
scale 10
* 根节点
** 第一级子节点 1
** 第二级子节点 1
** 第二级子节点 2
** 第一级子节点 2
@endmindmap