Mr. Font (France) said his understanding of the proposed amendment was that the substitution mechanism should be the subject of a clause in the concession contract, which would specify the conditions for the exercise of substitution. ###>Font (France) interprète l'amendement proposé comme signifiant que le mécanisme de substitution doit faire l'objet d'une clause du contrat de concession stipulant les conditions de l'exercice du droit de substitution.