1 . MEASURES ADOPTED BY THE INSTITUTIONS - METHOD OF PREPARATION - ECSC SYSTEM OF PRODUCTION QUOTAS - ASSENT OF THE COUNCIL - REQUIREMENTS AS TO FORM - JOINT EXAMINATION BY THE COMMISSION AND THE COUNCIL OF A DETAILED DRAFT DECISION - DUTY - NONE ( ECSC TREATY , ART . 58 ( 1 ), FIRST SUBPARA .) 2 . ECSC - PRODUCTION - QUOTA SYSTEM FOR STEEL PRODUCTION - DETERMINATION ON AN EQUITABLE BASIS - TAKING INTO ACCOUNT OF THE ACTUAL PRODUCTION OF UNDERTAKINGS - WHETHER PERMISSIBLE ( ECSC TREATY , ART . 58 ( 2 ); GENERAL DECISION OF THE COMMISSION , DECISION 1831/81 , ART . 6 ( 1 ) ( B )) 3 . ECSC - PRODUCTION - QUOTA SYSTEM - PURPOSE - GUARANTEE OF MINIMUM PRODUCTION FOR A GIVEN UNDERTAKING TO THE DETRIMENT OF THE OTHERS - DUTY OF THE COMMISSION - NONE ( ECSC TREATY , ART . 58 ) 4 . MEASURES ADOPTED BY THE INSTITUTIONS - STATEMENT OF REASONS - DUTY - SCOPE ( ECSC TREATY , ART . 15 , FIRST SUBPARA .) 5 . ECSC - PRODUCTION - QUOTA SYSTEM - PURPOSE - CORRECTION OF THE EFFECT OF ILLEGAL PUBLIC AIDS - RECTIFICATION - DUTY OF THE COMMISSION - NONE ( ECSC TREATY , ART . 58 ) 6 . ECSC - PRODUCTION - QUOTA SYSTEM - SCOPE - RESTRICTION OF SALES OPPORTUNITIES ON THE COMMUNITY MARKET - RESTRICTION OF EXPORT OPPORTUNITIES ( ECSC TREATY , ART . 58 ) 7 . ECSC - PRODUCTION - QUOTA SYSTEM - TAKING INTO ACCOUNT OF TRADE WITH NON-MEMBER COUNTRIES - DISCRETIONARY POWER OF THE COMMUNITY - SCOPE ( ECSC TREATY , ART . 58 )