Question juridique clé
Whether the addendum was a sham black-money agreement or a repayment clause in favor of the buyer
Solution extraite
The addendum was construed as a repayment obligation in favor of the buyer, not as a secret black-money payment to the seller's chairman.
Motifs extraits
The wording, surrounding circumstances, and later conduct did not support a different real intent; the buyer's use of foreign accounts and secrecy concerns were compatible with a repayment arrangement.