======Sekvence======
<uml t="Declaring participant">
actor Foo1
boundary Foo2
control Foo3
entity Foo4
database Foo5
Foo1 -> Foo2 : To boundary
Foo1 -> Foo3 : To control
Foo1 -> Foo4 : To entity
Foo1 -> Foo5 : To database
</uml>

<uml title="Change arrow style">
Bob ->x Alice
Bob -> Alice
Bob ->> Alice
Bob -\ Alice
Bob \\- Alice
Bob //-- Alice

Bob ->o Alice
Bob o\\-- Alice

Bob <-> Alice
Bob <->o Alice
</uml>

<uml title="Grouping message">
Alice -> Bob: Authentication Request

alt successful case

    Bob -> Alice: Authentication Accepted
    
else some kind of failure

    Bob -> Alice: Authentication Failure
    group My own label
        Alice -> Log : Log attack start
        loop 1000 times
            Alice -> Bob: DNS Attack
        end
        Alice -> Log : Log attack end
    end
    
else Another type of failure

   Bob -> Alice: Please repeat
   
end
</uml>