++++ 1 . PROCEDURE - APPLICATION FOR ANNULMENT - DECISIONS OF THE HIGH AUTHORITY - GENERAL OR INDIVIDUAL NATURE ( TREATY, ART . 33; CONVENTION ON THE TRANSITIONAL PROVISIONS, ART . 26 ). 2 . PROCEDURE - LETTER OF THE HIGH AUTHORITY - IN THE NATURE OF A DECISION ( TREATY, ART . 14 ) 3 . PROCEDURE - APPLICATION FOR ANNULMENT - GENERAL DECISION - UNDERTAKINGS - ADMISSIBILITY LIMITED TO THE SUBMISSION BASED ON MISUSE OF POWERS ( TREATY, ART . 33 ). 4 . TRANSITIONAL PERIOD - BELGIAN COAL - ESTIMATED PRODUCTION COSTS ( CONVENTION ON THE TRANSITIONAL PROVISIONS, ART . 26 ).