    sequenceDiagram
        autonumber
        participant Alice as A
        participant Bob@{ "type" : "collections" }
        box rgb(from hwb(120deg 10% 20%) r g calc(b + 200)) Group Description
            participant Alice Bob@{ "type" : "collections" }
        end
        box Aqua Group Description
            participant Alice and Bob as P as p
        end
        link Alice: Dashboard @ https://example.com/alice
        links John: {"Dashboard": "https://example.com/john", "Wiki": "https://example.com/john"}

        A->B
        A->>B
        A-xB
        A-)B
        A-//B
        A-\\B
        A-|/B
        A-|\B
        A//-B
        A\\-B
        A/|-B
        A\|-B

        A-->B
        A-->>B
        A--xB
        A--)B
        A--//B
        A--\\B
        A--|/B
        A--|\B
        A//--B
        A\\--B
        A/|--B
        A\|--B

        A<<->>B
        A<<-->>B
        A()<<-->>()B

        %% oups
        A-A--B
        %% ok
        A-A-->B

        %% only <br\s*>
        A  ->   Bob: Queue *message*<br><br/><br /><b>dsds</b>
        Bob->>S: Queue response
        create participant Carl
        Alice-xCarl: Hi $$\pi$$!
        create actor D as Donald
        Carl--xD: Hi!
        destroy Carl
        Alice-xCarl: We are too many
        activate John
        John-->>Alice: I #9829; you #infin; times more!
        deactivate John
        Alice->>+John: Hello John, how are you?
        John-->>-Alice: Great!

        Note right of John: Text in note
        Note over Alice,John: A typical interaction

        loop Every minute
            John-->Alice: Great!
        end

        alt is sick
            Bob->>Alice: Not so good :(
        else is well
            Bob->>Alice: Feeling fresh like a daisy
        end
        opt Extra response
            Bob->>Alice: Thanks for asking
        end

        par Alice to Bob
            Alice->>Bob: Hello guys!
        and Alice to John
            Alice->>John: Hello guys!
        end

        critical Establish a connection to the DB
            Service-->DB: connect
        option Network timeout
            Service-->Service: Log error
        end

        break when the booking process fails
            API-->Consumer: show failure
        end

        rect rgb(200, 150, 255)
            Alice->>+John: John, can you hear me?
            John-->>-Alice: Hi Alice, I can hear you!
        end