Commission Regulation (EC) No 1298/98 of 23 June 1998 amending Regulation (EC) No 577/97 laying down certain detailed rules for the application of Council Regulation (EC) No 2991/94 laying down standards for spreadable fats and of Council Regulation (EEC) No 1898/87 on the protection of designations used in the marketing of milk and milk products (Text with EEA relevance)