Parties are bound by customs they have agreed uponand the course of dealing
established in their commercial relationship.
Unless otherwise agreed by the parties, they are deemedto have agreed to professional
practicesof which they had knowledge or ought to have known and which, in trade, are widely
known and regularly observed by parties to contracts of the same nature in the line of
businessconcerned.
Unofficial translation
Spot-checked
In force from 15 December 2010
Source page 65