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+---
+puppeteer:
+  landscape: false
+  format: "A4"
+  timeout: 3000
+export_on_save:
+ puppeteer: true
+---
+
+# 时序图
+
+```plantuml
+@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
+ ```
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