UseCaseDiagram [frame=true framecolor=steelblue label="OnlineBet"] {
  actor a as "Parieur"
  usecase u as "Placer un pari"
  a -- u
  usecase y as "S'inscrire"
  a -- y
  actor b as "Sources"
  usecase v as "Mettre à jour les infos"
  b -- v 
  actor c as "Bookmaker"
  usecase w as "Définit les évènements"
  c -- w 
  usecase x as "Paramétrer le profil d'un parieur"
  c -- x
  
  
}