demo_doc/samples/demo02.md

puppeteer	export_on_save
landscape format timeout false A4 3000	puppeteer true

时序图

@startuml
title 时序图

Tomcat -> GitLab: Hello, my name is Tomcat
GitLab -> Tomcat: Hello, my name is GitLab

Tomcat -> GitLab: Nice to meet you.
Tomcat <-- GitLab: Nice to meet you too.
@enduml