++++ 1 . Officials - Recruitment - Vacant post - Filling of post - Procedures - Discretionary power of the institutions - Limits - Post involving the exercise of a power to take decisions - Choice of one of the legal procedures laid down in the Staff Regulations or the Conditions of Employment of Other Servants 2 . Officials - Actions - Interest in bringing proceedings - Person to whom a judgment annulling a measure is addressed - Action against an act of an institution adopted to comply with the judgment of the Court - Admissibility ( Staff Regulations of Officials, Art . 91 ) 3 . Officials - Recruitment - Engagement of a member of the temporary staff - Engagement for the purpose of regularizing the position of the person concerned after the annulment of his appointment as an official - Misuse of power - Illegality 4 . Officials - Recruitment - Procedures - Choice - Discretionary power of the administration - Engagement of a temporary member of staff in order to fill a permanent post - Whether permissible ( Conditions of Employment of Other Servants, Art . 2(b ) ) 5 . Officials - Recruitment - Notice of vacancy - Open competition procedure - Correspondence necessary between a notice of vacancy and a notice of competition ( Staff Regulations of Officials, Art . 29(1 ) )