Pu2Mm

@startuml
autonumber

skinparam sequenceMessageAlign right

title This is the diagram's title
header first part

participant Participant as Foo
actor       "this is an Actor"       as Foo1
boundary    "this is a Boundary\nwith long name"    as Foo2 order 100 #555
control     Control     as Foo3
box insignificant participants are here
  entity      Entity      as Foo4 order 30
  database    Database    as Foo5 order 10 #a74
  collections Collections as Foo6 order 20 
  queue       Queue       as Foo7 #7F2
end box

group #666 First authentication 
  Foo -> Foo1 : To actor
  Foo -> Foo2 : To boundary
  Foo -> Foo3 : To control
end

Foo -> Foo4 : To entity
== This is a break ==
Foo -> Foo5 : To database
...
Foo -> Foo6 : To collections
... time goes by ...
Foo ->> Foo7: To queue

' this is a comment

Foo1 -> Foo1: compute
note right #444: internal process
Foo2 <-> Foo3: bidi

group Authentication
  Foo->Foo3: Authentication Request
  activate Foo3
  Foo<--Foo3: Authentication Response
  destroy Foo3
end

note left #643
  Left of control
end note
note right
  Right of participant
end note

note left of Foo
  left
  of
  participant
end note
note over Foo1,Foo3 #64f
  over actor and control
end note

@enduml

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