1 . OBJECTION OF ILLEGALITY - MEASURES AGAINST WHICH AN OBJECTION OF ILLEGALITY MAY BE RAISED - INDIVIDUAL DECISIONS - EXCLUDED ( ECSC TREATY , ART . 36 , THIRD PARA .) 2.ECSC - PRODUCTION - SYSTEM OF STEEL PRODUCTION QUOTAS - GENERAL DECISION NO 1831/81 - ADJUSTMENT OF QUOTAS - PURPOSE AND DETAILED RULES ( GENERAL DECISION NO 1831/81/ECSC , ART . 10 )