++++ 1 . PROCEDURE - APPLICATION FOR ANNULMENT - INDIVIDUAL DECISION - RETENTION OF DISCRIMINATORY RATES AND CONDITIONS - INTEREST IN INSTITUTING PROCEEDINGS ( ECSC TREATY, SECOND PARAGRAPH OF ARTICLE 33 ) 2 . COMPETITION - UNDERTAKINGS IN COMPETITION WITHIN THE COMMON MARKET - CONCEPT 3 . TRANSPORT - TARIFF FIXED TO MEET COMPETITION - CONCEPT 4 . TRANSPORT - RATES AND CONDITIONS - SPECIAL INTERNAL RATES AND CONDITIONS WHICH CONSTITUTE TARIFFS FIXED TO MEET COMPETITION - LEGALITY ( ECSC TREATY, ARTICLE 70 ) 5 . TRANSPORT - RATES AND CONDITIONS - TARIFF ARRANGEMENTS INCLUDING SPECIAL RATES AND CONDITIONS EACH OF WHICH IS ACKNOWLEDGED TO BE LAWFUL - LEGALITY OF SUCH A SYSTEM ( ECSC TREATY, ARTICLE 70 ) 6 . TRANSPORT - SPECIAL INTERNAL RATES AND CONDITIONS WHICH ARE INCOMPATIBLE WITH THE TREATY - MODIFICATION - TIME-LIMITS ( ECSC TREATY, CONVENTION ON THE TRANSITIONAL PROVISIONS, ARTICLE 1 ( 5 ), SEVENTH PARAGRAPH OF ARTICLE 10 ) 7 . PROCEDURE - ACTION FOR FAILURE TO ACT - OBJECT - REFUSAL OF THE HIGH AUTHORITY FOLLOWING A FORMAL DEMAND TO DO SO ( ECSC TREATY, ARTICLE 35 )