++++ 1 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - MILK AND MILK PRODUCTS - BUTTER IN STORAGE - SALE AT A REDUCED PRICE FOR DIRECT CONSUMPTION - "CHRISTMAS BUTTER" SCHEME - COMMISSION' S POWERS ( REGULATION NO 804/68 OF THE COUNCIL, ARTS 6, 12 AND 30, REGULATIONS NOS 985/68 AND 750/69 OF THE COUNCIL AND COUNCIL REGULATION NO 1269/79; COMMISSION REGULATION NO 2956/84 ) 2 . AGRICULTURE - COMMON AGRICULTURAL POLICY - AIMS - RECONCILIATION - COMMISSION' S DISCRETION - GUARANTEE OF A REASONABLE INCOME FOR MILK PRODUCERS - "CHRISTMAS BUTTER" SCHEME FOR THE SALE OF BUTTER IN STORAGE AT REDUCED PRICES - LAWFULNESS ( EEC TREATY, ART . 39 ( 1 ); COMMISSION REGULATION NO 2956/84 ) 3 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - DISCRIMINATION BETWEEN PRODUCERS OR CONSUMERS - "CHRISTMAS BUTTER" SCHEME FOR THE SALE OF BUTTER IN STORAGE AT REDUCED PRICES - EFFECTS ON THE MARGARINE MARKET - ABSENCE OF DISCRIMINATION ( EEC TREATY, ART . 40 ( 3 ), SECOND SUBPARAGRAPH; COMMISSION REGULATION NO 2956/84 ) 4 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - MILK AND MILK PRODUCTS - BUTTER IN STORAGE - SALE AT A REDUCED PRICE FOR DIRECT CONSUMPTION - "CHRISTMAS BUTTER" SCHEME - LIMITED EFFECTIVENESS AND HIGH COST - PRINCIPLE OF PROPORTIONALITY - BREACH - NONE ( COMMISSION REGULATION NO 2956/84 )