user { # User
  n1: circle label:"Start Notification Pattern"
  n3: rectangle label:"Validate Notification Pattern conditions"
  n5: rectangle label:"Record Notification Pattern outcome"
  n7: circle label:"End Notification Pattern"
  n1.handle(bottom) -> app.n2.handle(top)
  n3.handle(bottom) -> app.n4.handle(top)
  n5.handle(bottom) -> app.n6.handle(top) [label="Done"]
}

app { # App
  n2: rectangle label:"Receive Notification Pattern event"
  n4: rectangle label:"Execute Notification Pattern action"
  n6: rectangle label:"Monitor Notification Pattern status"
  n2.handle(right) -> user.n3.handle(left) [label="Next"]
  n4.handle(right) -> user.n5.handle(left)
  n6.handle(right) -> user.n7.handle(left)
}