1 . APPLICATION FOR ANNULMENT - ADMISSIBILITY - NATURAL OR LEGAL PERSONS - ACT OF DIRECT AND INDIVIDUAL CONCERN TO THEM - DECISION ADDRESSED TO THE MEMBER STATES - OBJECT ( EEC TREATY , ART . 173 , SECOND PARAGRAPH ; COMMISSION DECISION NO 78/258 ) 2 . ACTS OF AN INSTITUTION - NOTICES OF INVITATIONS TO TENDER FOR FROZEN BEEF HELD BY THE INTERVENTION AGENCIES - LEGAL NATURE 3 . PROCEDURE - PLEA OF ILLEGALITY - ACTS WHICH MAY BE CHALLENGED ON THE GROUND OF THEIR ILLEGALITY ( EEC TREATY , ART . 184 ) 4 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - BEEF AND VEAL - FROZEN MEAT - IMPORTATION UNDER TOTAL SUSPENSION OF THE LEVY - ' ' LINKING ' ' SYSTEM - BENEFICIARIES - ENLARGEMENT BY THE COMMISSION OF THE CATEGORY OF PERSONS ABLE TO TAKE ADVANTAGE OF THE SYSTEM - ILLEGALITY ( REGULATION NO 805/68 OF THE COUNCIL , ART . 14 AS AMENDED BY COUNCIL REGULATION NO 425/77 ; COMMISSION REGULATION NO 585/77 , ART . 11A ADDED BY COMMISSION REGULATION NO 2901/77 ) 5 . INVITATIONS TO TENDER - PROCEDURE - GUARANTEES OF OBJECTIVITY - ANONYMITY - LIMITS