++++ 1. Actions against Community institutions for failure to act ° Natural or legal persons ° Actionable omissions ° Failure to send the originator of a complaint alleging infringement of the competition rules a provisional communication under Article 6 of Regulation No 99/63 (EEC Treaty, Art. 175, third para.; Commission Regulation No 99/63, Art. 6) 2. Actions against Community institutions for failure to act ° Failure to act remedied after the action was brought ° Subject-matter of the application no longer in existence ° No need to give a decision (EEC Treaty, Arts 175 and 176) 3. Actions for annulment ° Actionable measures ° Concept ° Measures having adverse effect ° Administrative procedure applying the competition rules ° Communications provided for in Article 6 of Regulation No 99/63 ° Excluded (EEC Treaty, Arts 173 and 189; Council Regulation No 17, Art. 3; Commission Regulation No 99/63, Art. 6) 4. Procedure ° Subject-matter of the proceedings ° Modification during the proceedings ° Prohibited (Rules of Procedure of the Court of First Instance, Art. 48(2))