1 . MEASURES ADOPTED BY THE INSTITUTIONS - ELABORATION PROCEDURE - ECSC SYSTEM OF PRODUCTION QUOTAS - ASSENT OF THE COUNCIL - ESSENTIAL PROCEDURAL REQUIREMENT ( ECSC TREATY , ART . 58 ) 2 . ECSC - PRODUCTION - SYSTEM OF QUOTAS - PURPOSE - GUARANTEE OF A MINIMUM LEVEL OF EMPLOYMENT IN THE VARIOUS UNDERTAKINGS - EXCLUDED ( ECSC TREATY , ART . 58 ) 3 . ECSC - AIMS - CONSTANT RECONCILIATION ( ECSC TREATY , ARTS 2 , 3 AND 4 ) 4 . ECSC - PRODUCTION - SYSTEM OF QUOTAS - PURPOSE - DISTORTIONS OF COMPETITION DUE TO STATE AIDS - TAKING INTO CONSIDERATION - CONDITIONS - CORRECTION - EXCLUDED ( ECSC TREATY , ARTS 4 ( C ) AND 58 ) 5 . ECSC - PRODUCTION - SYSTEM OF QUOTAS - TAKING INTO CONSIDERATION OF EXTERNAL TRADE - DISCRETION OF THE COMMISSION - CONDITIONS FOR EXERCISE - PRODUCTION INTENDED FOR EXPORT TO NON-MEMBER COUNTRIES - COMPULSORY EXEMPTION FROM THE SYSTEM OF QUOTAS - NONE ( ECSC TREATY , ART . 58 ) 6 . ECSC - PRODUCTION - SYSTEM OF STEEL PRODUCTION QUOTAS - DETERMINATION ON AN EQUITABLE BASIS - TAKING INTO CONSIDERATION OF UNDERTAKINGS ' PRODUCTION - WHETHER PERMISSIBLE ( ECSC TREATY , ART . 58 ( 2 ); DECISION NO 2794/80 , ART . 4 ) 7 . ECSC - PRODUCTION - SYSTEM OF STEEL PRODUCTION QUOTAS - DETERMINATION ON AN EQUITABLE BASIS - TAKING INTO CONSIDERATION OF UNDERTAKINGS ' REFERENCE PRODUCTION FIGURES - ADJUSTMENT - CRITERIA - ACTUAL PRODUCTION CAPACITY DURING THE REFERENCE PERIOD ( DECISION NO 2794/80 , ART . 4 )