translate English to French: The contracting parties' consent to the jurisdiction clause is presumed to exist where their conduct is consistent with a usage which governs the area of international trade or commerce in which they operate and of which they are, or ought to have been, aware.
1) Le consentement des parties contractantes à la clause attributive de juridiction est présumé exister lorsque leur comportement correspond à un usage régissant le domain e du commerce international dans lequel elles opèrent et dont elles ont ou sont censées avoir connaissance.