++++ 1 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - EXPORT REFUNDS - ADVANCE PAYMENT - REPAYMENT OF AMOUNTS UNDULY PAID - SUPPLEMENT - RATE OF 20% - PRINCIPLE OF PROPORTIONALITY - BREACH - NONE ( COMMISSION REGULATION NO 1957/69, ART . 6 ( 1 )*) 2 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - EXPORT REFUNDS - ADVANCE PAYMENT - REPAYMENT OF AMOUNTS UNDULY PAID - SUPPLEMENT - BASIS OF CALCULATION - DIFFERENCE BETWEEN THE REFUND PAID IN ADVANCE AND THE REFUND ACTUALLY DUE ( COMMISSION REGULATION NO 1957/69, ART . 6 ( 1 ) AND ( 5 )*)