graph LR; A-->B; B-->C;

sequenceDiagram Merchant->>Customer: foo Note right of Person: Bob thinks a long long time, so long that the text does not fit In a row. Bob thinks a long long time, so long that the text does not fit In a row. Bob thinks a long long time, so long that the text does not fit In a row. Bob thinks a long long time, so long that the text does not fit In a row. Person-->>Customer: bar Note left of Person: Foo checks up on him