1 . OFFICIALS - APPLICATIONS TO THE COURT - ACT ADVERSELY AFFECTING AN OFFICIAL - GENERAL PROVISION TO BE IMPLEMENTED BY MEANS OF INDIVIDUAL DECISIONS - NON-APPLICATION TO A PARTICULAR CASE ( STAFF REGULATIONS , ARTS 90 AND 91 ) 2 . COMMUNITY LAW - PRINCIPLES - EQUAL TREATMENT - CONCEPT 3 . OFFICIALS - REMUNERATION - FOREIGN RESIDENCE ALLOWANCE - CONDITIONS FOR GRANT - NATIONALITY SOLE CRITERION - BREACH OF THE PRINCIPLE OF EQUAL TREATMENT - NONE ( STAFF REGULATIONS , ANNEX VII , ART . 4 ( 2 ))