CDG WAC (Croatian Digital Group - Worked All Continents Award.
You can earn continent endorsements as shown in the following table, based on QSOs with the specified number of unique grid squares within a single continent. Note that the required number of grids varies with operating mode (similar to the Basic Requirement). If you earn endorsements for all continents in a given mode, you can claim the Worked All Continents (WAC) award for that mode. Note that continent endorsements are a one time endorsement.