sequenceDiagram title: FancySequenceDiagram accDescription Test a description participant Alice participant Bob participant John as John
Second Line autonumber 10 10 rect rgb(200, 220, 100) rect rgb(200, 255, 200) Alice ->> Bob: Hello Bob, how are you? Bob-->>John: How about you John? end Bob--x Alice: I am good thanks! Bob-x John: I am good thanks! Note right of John: John thinks a long
long time, so long
that the text does
not fit on a row. Bob-->Alice: Checking with John... Note over John:wrap: John looks like he's still thinking, so Bob prods him a bit. Bob-x John: Hey John - we're still waiting to know
how you're doing Note over John:nowrap: John's trying hard not to break his train of thought. Bob-x John:wrap: John! Are you still debating about how you're doing? How long does it take?? Note over John: After a few more moments, John
finally snaps out of it. end autonumber off alt either this Alice->>+John: Yes John-->>-Alice: OK else or this autonumber Alice->>John: No else or this will happen Alice->John: Maybe end autonumber 200 par this happens in parallel Alice -->> Bob: Parallel message 1 and Alice -->> John: Parallel message 2 end